Home / 7,988.28-11,015.17-5,437.69

Finding the Fourth Proportional to 7,988.28, 11,015.17 and 5,437.69

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Solution

The fourth proportional to 7,988.28, 11,015.17 and 5,437.69 is: 7,498.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.28 : 11,015.17 = 5,437.69 : x
  2. Step 2: Convert to fraction form
    7,988.28/11,015.17 = 5,437.69/x
  3. Step 3: Cross multiply
    7,988.28x = 11,015.17 × 5,437.69
  4. Step 4: Simplify right side
    7,988.28x = 59,897,038.63
  5. Step 5: Solve for x
    x = 59,897,038.63/7,988.28
  6. Step 6: Final answer
    x = 7,498.12

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Double 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.