Home / 5,641.76-8,458.36-3,420.14

Finding the Fourth Proportional to 5,641.76, 8,458.36 and 3,420.14

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Solution

The fourth proportional to 5,641.76, 8,458.36 and 3,420.14 is: 5,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.76 : 8,458.36 = 3,420.14 : x
  2. Step 2: Convert to fraction form
    5,641.76/8,458.36 = 3,420.14/x
  3. Step 3: Cross multiply
    5,641.76x = 8,458.36 × 3,420.14
  4. Step 4: Simplify right side
    5,641.76x = 28,928,724.53
  5. Step 5: Solve for x
    x = 28,928,724.53/5,641.76
  6. Step 6: Final answer
    x = 5,127.60

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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.