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Finding the Fourth Proportional to 8,777.79, 12,113.01 and 5,001.17

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Solution

The fourth proportional to 8,777.79, 12,113.01 and 5,001.17 is: 6,901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.79 : 12,113.01 = 5,001.17 : x
  2. Step 2: Convert to fraction form
    8,777.79/12,113.01 = 5,001.17/x
  3. Step 3: Cross multiply
    8,777.79x = 12,113.01 × 5,001.17
  4. Step 4: Simplify right side
    8,777.79x = 60,579,161.66
  5. Step 5: Solve for x
    x = 60,579,161.66/8,777.79
  6. Step 6: Final answer
    x = 6,901.41

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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.