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Finding the Fourth Proportional to 5,079.29, 7,615.28 and 2,156.00

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Solution

The fourth proportional to 5,079.29, 7,615.28 and 2,156.00 is: 3,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.29 : 7,615.28 = 2,156.00 : x
  2. Step 2: Convert to fraction form
    5,079.29/7,615.28 = 2,156.00/x
  3. Step 3: Cross multiply
    5,079.29x = 7,615.28 × 2,156.00
  4. Step 4: Simplify right side
    5,079.29x = 16,418,510.99
  5. Step 5: Solve for x
    x = 16,418,510.99/5,079.29
  6. Step 6: Final answer
    x = 3,232.45

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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.