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Finding the Fourth Proportional to 5,012.20, 6,916.86 and 2,916.40

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Solution

The fourth proportional to 5,012.20, 6,916.86 and 2,916.40 is: 4,024.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.20 : 6,916.86 = 2,916.40 : x
  2. Step 2: Convert to fraction form
    5,012.20/6,916.86 = 2,916.40/x
  3. Step 3: Cross multiply
    5,012.20x = 6,916.86 × 2,916.40
  4. Step 4: Simplify right side
    5,012.20x = 20,172,330.50
  5. Step 5: Solve for x
    x = 20,172,330.50/5,012.20
  6. Step 6: Final answer
    x = 4,024.65

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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.