Home / 5,585.40-8,387.70-5,412.60

Finding the Fourth Proportional to 5,585.40, 8,387.70 and 5,412.60

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Solution

The fourth proportional to 5,585.40, 8,387.70 and 5,412.60 is: 8,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,585.40 : 8,387.70 = 5,412.60 : x
  2. Step 2: Convert to fraction form
    5,585.40/8,387.70 = 5,412.60/x
  3. Step 3: Cross multiply
    5,585.40x = 8,387.70 × 5,412.60
  4. Step 4: Simplify right side
    5,585.40x = 45,399,265.02
  5. Step 5: Solve for x
    x = 45,399,265.02/5,585.40
  6. Step 6: Final answer
    x = 8,128.20

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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.