Home / 9,189.47-12,681.46-5,210.58

Finding the Fourth Proportional to 9,189.47, 12,681.46 and 5,210.58

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Solution

The fourth proportional to 9,189.47, 12,681.46 and 5,210.58 is: 7,190.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.47 : 12,681.46 = 5,210.58 : x
  2. Step 2: Convert to fraction form
    9,189.47/12,681.46 = 5,210.58/x
  3. Step 3: Cross multiply
    9,189.47x = 12,681.46 × 5,210.58
  4. Step 4: Simplify right side
    9,189.47x = 66,077,698.44
  5. Step 5: Solve for x
    x = 66,077,698.44/9,189.47
  6. Step 6: Final answer
    x = 7,190.59

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.