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Finding the Fourth Proportional to 7,931.30, 10,950.54 and 7,089.31

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Solution

The fourth proportional to 7,931.30, 10,950.54 and 7,089.31 is: 9,788.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.30 : 10,950.54 = 7,089.31 : x
  2. Step 2: Convert to fraction form
    7,931.30/10,950.54 = 7,089.31/x
  3. Step 3: Cross multiply
    7,931.30x = 10,950.54 × 7,089.31
  4. Step 4: Simplify right side
    7,931.30x = 77,631,717.97
  5. Step 5: Solve for x
    x = 77,631,717.97/7,931.30
  6. Step 6: Final answer
    x = 9,788.02

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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.