Home / 4,020.20-6,031.01-1,387.50

Finding the Fourth Proportional to 4,020.20, 6,031.01 and 1,387.50

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Solution

The fourth proportional to 4,020.20, 6,031.01 and 1,387.50 is: 2,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020.20 : 6,031.01 = 1,387.50 : x
  2. Step 2: Convert to fraction form
    4,020.20/6,031.01 = 1,387.50/x
  3. Step 3: Cross multiply
    4,020.20x = 6,031.01 × 1,387.50
  4. Step 4: Simplify right side
    4,020.20x = 8,368,026.38
  5. Step 5: Solve for x
    x = 8,368,026.38/4,020.20
  6. Step 6: Final answer
    x = 2,081.50

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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.