Home / 2,753.31-4,128.12-1,521.30

Finding the Fourth Proportional to 2,753.31, 4,128.12 and 1,521.30

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Solution

The fourth proportional to 2,753.31, 4,128.12 and 1,521.30 is: 2,280.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.31 : 4,128.12 = 1,521.30 : x
  2. Step 2: Convert to fraction form
    2,753.31/4,128.12 = 1,521.30/x
  3. Step 3: Cross multiply
    2,753.31x = 4,128.12 × 1,521.30
  4. Step 4: Simplify right side
    2,753.31x = 6,280,108.96
  5. Step 5: Solve for x
    x = 6,280,108.96/2,753.31
  6. Step 6: Final answer
    x = 2,280.93

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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.