Home / 1,324.60-1,987.57-631.14

Finding the Fourth Proportional to 1,324.60, 1,987.57 and 631.14

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Solution

The fourth proportional to 1,324.60, 1,987.57 and 631.14 is: 947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.60 : 1,987.57 = 631.14 : x
  2. Step 2: Convert to fraction form
    1,324.60/1,987.57 = 631.14/x
  3. Step 3: Cross multiply
    1,324.60x = 1,987.57 × 631.14
  4. Step 4: Simplify right side
    1,324.60x = 1,254,421.84
  5. Step 5: Solve for x
    x = 1,254,421.84/1,324.60
  6. Step 6: Final answer
    x = 947.02

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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.