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Finding the Fourth Proportional to 3,154.92, 4,699.16 and 3,012.78

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Solution

The fourth proportional to 3,154.92, 4,699.16 and 3,012.78 is: 4,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.92 : 4,699.16 = 3,012.78 : x
  2. Step 2: Convert to fraction form
    3,154.92/4,699.16 = 3,012.78/x
  3. Step 3: Cross multiply
    3,154.92x = 4,699.16 × 3,012.78
  4. Step 4: Simplify right side
    3,154.92x = 14,157,535.26
  5. Step 5: Solve for x
    x = 14,157,535.26/3,154.92
  6. Step 6: Final answer
    x = 4,487.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.