Home / 4,972.38-6,861.88-2,877.72

Finding the Fourth Proportional to 4,972.38, 6,861.88 and 2,877.72

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Solution

The fourth proportional to 4,972.38, 6,861.88 and 2,877.72 is: 3,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.38 : 6,861.88 = 2,877.72 : x
  2. Step 2: Convert to fraction form
    4,972.38/6,861.88 = 2,877.72/x
  3. Step 3: Cross multiply
    4,972.38x = 6,861.88 × 2,877.72
  4. Step 4: Simplify right side
    4,972.38x = 19,746,569.31
  5. Step 5: Solve for x
    x = 19,746,569.31/4,972.38
  6. Step 6: Final answer
    x = 3,971.25

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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.