Home / 5,585.40-8,378.10-4,127.40

Finding the Fourth Proportional to 5,585.40, 8,378.10 and 4,127.40

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Solution

The fourth proportional to 5,585.40, 8,378.10 and 4,127.40 is: 6,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,585.40 : 8,378.10 = 4,127.40 : x
  2. Step 2: Convert to fraction form
    5,585.40/8,378.10 = 4,127.40/x
  3. Step 3: Cross multiply
    5,585.40x = 8,378.10 × 4,127.40
  4. Step 4: Simplify right side
    5,585.40x = 34,579,769.94
  5. Step 5: Solve for x
    x = 34,579,769.94/5,585.40
  6. Step 6: Final answer
    x = 6,191.10

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Half scale
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Double scale
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Similar ratio
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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.