Home / 3,113.60-4,296.56-1,787.12

Finding the Fourth Proportional to 3,113.60, 4,296.56 and 1,787.12

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Solution

The fourth proportional to 3,113.60, 4,296.56 and 1,787.12 is: 2,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.60 : 4,296.56 = 1,787.12 : x
  2. Step 2: Convert to fraction form
    3,113.60/4,296.56 = 1,787.12/x
  3. Step 3: Cross multiply
    3,113.60x = 4,296.56 × 1,787.12
  4. Step 4: Simplify right side
    3,113.60x = 7,678,468.31
  5. Step 5: Solve for x
    x = 7,678,468.31/3,113.60
  6. Step 6: Final answer
    x = 2,466.11

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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.