Home / 5,639.40-8,442.90-5,056.20

Finding the Fourth Proportional to 5,639.40, 8,442.90 and 5,056.20

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Solution

The fourth proportional to 5,639.40, 8,442.90 and 5,056.20 is: 7,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.40 : 8,442.90 = 5,056.20 : x
  2. Step 2: Convert to fraction form
    5,639.40/8,442.90 = 5,056.20/x
  3. Step 3: Cross multiply
    5,639.40x = 8,442.90 × 5,056.20
  4. Step 4: Simplify right side
    5,639.40x = 42,688,990.98
  5. Step 5: Solve for x
    x = 42,688,990.98/5,639.40
  6. Step 6: Final answer
    x = 7,569.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.