Home / 3,124.30-4,687.12-933.20

Finding the Fourth Proportional to 3,124.30, 4,687.12 and 933.20

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Solution

The fourth proportional to 3,124.30, 4,687.12 and 933.20 is: 1,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.30 : 4,687.12 = 933.20 : x
  2. Step 2: Convert to fraction form
    3,124.30/4,687.12 = 933.20/x
  3. Step 3: Cross multiply
    3,124.30x = 4,687.12 × 933.20
  4. Step 4: Simplify right side
    3,124.30x = 4,374,020.38
  5. Step 5: Solve for x
    x = 4,374,020.38/3,124.30
  6. Step 6: Final answer
    x = 1,400.00

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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.