Home / 5,642.15-7,785.97-3,124.36

Finding the Fourth Proportional to 5,642.15, 7,785.97 and 3,124.36

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Solution

The fourth proportional to 5,642.15, 7,785.97 and 3,124.36 is: 4,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642.15 : 7,785.97 = 3,124.36 : x
  2. Step 2: Convert to fraction form
    5,642.15/7,785.97 = 3,124.36/x
  3. Step 3: Cross multiply
    5,642.15x = 7,785.97 × 3,124.36
  4. Step 4: Simplify right side
    5,642.15x = 24,326,157.61
  5. Step 5: Solve for x
    x = 24,326,157.61/5,642.15
  6. Step 6: Final answer
    x = 4,311.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.