Home / 2,275.46-3,412.80-631.64

Finding the Fourth Proportional to 2,275.46, 3,412.80 and 631.64

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Solution

The fourth proportional to 2,275.46, 3,412.80 and 631.64 is: 947.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.46 : 3,412.80 = 631.64 : x
  2. Step 2: Convert to fraction form
    2,275.46/3,412.80 = 631.64/x
  3. Step 3: Cross multiply
    2,275.46x = 3,412.80 × 631.64
  4. Step 4: Simplify right side
    2,275.46x = 2,155,660.99
  5. Step 5: Solve for x
    x = 2,155,660.99/2,275.46
  6. Step 6: Final answer
    x = 947.35

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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.