Home / 1,520.16-2,276.91-697.20

Finding the Fourth Proportional to 1,520.16, 2,276.91 and 697.20

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Solution

The fourth proportional to 1,520.16, 2,276.91 and 697.20 is: 1,044.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.16 : 2,276.91 = 697.20 : x
  2. Step 2: Convert to fraction form
    1,520.16/2,276.91 = 697.20/x
  3. Step 3: Cross multiply
    1,520.16x = 2,276.91 × 697.20
  4. Step 4: Simplify right side
    1,520.16x = 1,587,461.65
  5. Step 5: Solve for x
    x = 1,587,461.65/1,520.16
  6. Step 6: Final answer
    x = 1,044.27

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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.