Home / 4,142.20-6,215.70-1,545.40

Finding the Fourth Proportional to 4,142.20, 6,215.70 and 1,545.40

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Solution

The fourth proportional to 4,142.20, 6,215.70 and 1,545.40 is: 2,319.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.20 : 6,215.70 = 1,545.40 : x
  2. Step 2: Convert to fraction form
    4,142.20/6,215.70 = 1,545.40/x
  3. Step 3: Cross multiply
    4,142.20x = 6,215.70 × 1,545.40
  4. Step 4: Simplify right side
    4,142.20x = 9,605,742.78
  5. Step 5: Solve for x
    x = 9,605,742.78/4,142.20
  6. Step 6: Final answer
    x = 2,319.00

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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.