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Finding the Fourth Proportional to 5,005.80, 6,901.20 and 4,787.10

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Solution

The fourth proportional to 5,005.80, 6,901.20 and 4,787.10 is: 6,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,005.80 : 6,901.20 = 4,787.10 : x
  2. Step 2: Convert to fraction form
    5,005.80/6,901.20 = 4,787.10/x
  3. Step 3: Cross multiply
    5,005.80x = 6,901.20 × 4,787.10
  4. Step 4: Simplify right side
    5,005.80x = 33,036,734.52
  5. Step 5: Solve for x
    x = 33,036,734.52/5,005.80
  6. Step 6: Final answer
    x = 6,599.69

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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.