Home / 8,747.28-12,075.36-5,605.28

Finding the Fourth Proportional to 8,747.28, 12,075.36 and 5,605.28

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Solution

The fourth proportional to 8,747.28, 12,075.36 and 5,605.28 is: 7,737.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.28 : 12,075.36 = 5,605.28 : x
  2. Step 2: Convert to fraction form
    8,747.28/12,075.36 = 5,605.28/x
  3. Step 3: Cross multiply
    8,747.28x = 12,075.36 × 5,605.28
  4. Step 4: Simplify right side
    8,747.28x = 67,685,773.90
  5. Step 5: Solve for x
    x = 67,685,773.90/8,747.28
  6. Step 6: Final answer
    x = 7,737.92

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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.