Home / 7,787.90-10,747.65-4,431.32

Finding the Fourth Proportional to 7,787.90, 10,747.65 and 4,431.32

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Solution

The fourth proportional to 7,787.90, 10,747.65 and 4,431.32 is: 6,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.90 : 10,747.65 = 4,431.32 : x
  2. Step 2: Convert to fraction form
    7,787.90/10,747.65 = 4,431.32/x
  3. Step 3: Cross multiply
    7,787.90x = 10,747.65 × 4,431.32
  4. Step 4: Simplify right side
    7,787.90x = 47,626,276.40
  5. Step 5: Solve for x
    x = 47,626,276.40/7,787.90
  6. Step 6: Final answer
    x = 6,115.42

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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.