Home / 2,275.09-3,412.62-631.87

Finding the Fourth Proportional to 2,275.09, 3,412.62 and 631.87

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Solution

The fourth proportional to 2,275.09, 3,412.62 and 631.87 is: 947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.09 : 3,412.62 = 631.87 : x
  2. Step 2: Convert to fraction form
    2,275.09/3,412.62 = 631.87/x
  3. Step 3: Cross multiply
    2,275.09x = 3,412.62 × 631.87
  4. Step 4: Simplify right side
    2,275.09x = 2,156,332.20
  5. Step 5: Solve for x
    x = 2,156,332.20/2,275.09
  6. Step 6: Final answer
    x = 947.80

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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.