Home / 8,070.64-11,139.72-5,681.14

Finding the Fourth Proportional to 8,070.64, 11,139.72 and 5,681.14

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Solution

The fourth proportional to 8,070.64, 11,139.72 and 5,681.14 is: 7,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.64 : 11,139.72 = 5,681.14 : x
  2. Step 2: Convert to fraction form
    8,070.64/11,139.72 = 5,681.14/x
  3. Step 3: Cross multiply
    8,070.64x = 11,139.72 × 5,681.14
  4. Step 4: Simplify right side
    8,070.64x = 63,286,308.88
  5. Step 5: Solve for x
    x = 63,286,308.88/8,070.64
  6. Step 6: Final answer
    x = 7,841.55

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Half scale
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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.