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Finding the Fourth Proportional to 3,616.57, 4,990.57 and 2,124.55

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Solution

The fourth proportional to 3,616.57, 4,990.57 and 2,124.55 is: 2,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.57 : 4,990.57 = 2,124.55 : x
  2. Step 2: Convert to fraction form
    3,616.57/4,990.57 = 2,124.55/x
  3. Step 3: Cross multiply
    3,616.57x = 4,990.57 × 2,124.55
  4. Step 4: Simplify right side
    3,616.57x = 10,602,715.49
  5. Step 5: Solve for x
    x = 10,602,715.49/3,616.57
  6. Step 6: Final answer
    x = 2,931.70

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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.