Home / 2,634.24-3,948.80-990.08

Finding the Fourth Proportional to 2,634.24, 3,948.80 and 990.08

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Solution

The fourth proportional to 2,634.24, 3,948.80 and 990.08 is: 1,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.24 : 3,948.80 = 990.08 : x
  2. Step 2: Convert to fraction form
    2,634.24/3,948.80 = 990.08/x
  3. Step 3: Cross multiply
    2,634.24x = 3,948.80 × 990.08
  4. Step 4: Simplify right side
    2,634.24x = 3,909,627.90
  5. Step 5: Solve for x
    x = 3,909,627.90/2,634.24
  6. Step 6: Final answer
    x = 1,484.16

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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.