Home / 9,347.39-12,898.81-5,155.64

Finding the Fourth Proportional to 9,347.39, 12,898.81 and 5,155.64

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Solution

The fourth proportional to 9,347.39, 12,898.81 and 5,155.64 is: 7,114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.39 : 12,898.81 = 5,155.64 : x
  2. Step 2: Convert to fraction form
    9,347.39/12,898.81 = 5,155.64/x
  3. Step 3: Cross multiply
    9,347.39x = 12,898.81 × 5,155.64
  4. Step 4: Simplify right side
    9,347.39x = 66,501,620.79
  5. Step 5: Solve for x
    x = 66,501,620.79/9,347.39
  6. Step 6: Final answer
    x = 7,114.46

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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.