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Finding the Fourth Proportional to 3,119.93, 4,656.02 and 2,787.13

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Solution

The fourth proportional to 3,119.93, 4,656.02 and 2,787.13 is: 4,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.93 : 4,656.02 = 2,787.13 : x
  2. Step 2: Convert to fraction form
    3,119.93/4,656.02 = 2,787.13/x
  3. Step 3: Cross multiply
    3,119.93x = 4,656.02 × 2,787.13
  4. Step 4: Simplify right side
    3,119.93x = 12,976,948.45
  5. Step 5: Solve for x
    x = 12,976,948.45/3,119.93
  6. Step 6: Final answer
    x = 4,159.37

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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.