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Finding the Fourth Proportional to 7,938.81, 11,897.28 and 7,567.02

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Solution

The fourth proportional to 7,938.81, 11,897.28 and 7,567.02 is: 11,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.81 : 11,897.28 = 7,567.02 : x
  2. Step 2: Convert to fraction form
    7,938.81/11,897.28 = 7,567.02/x
  3. Step 3: Cross multiply
    7,938.81x = 11,897.28 × 7,567.02
  4. Step 4: Simplify right side
    7,938.81x = 90,026,955.71
  5. Step 5: Solve for x
    x = 90,026,955.71/7,938.81
  6. Step 6: Final answer
    x = 11,340.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.