Home / 5,657.30-7,807.14-3,139.44

Finding the Fourth Proportional to 5,657.30, 7,807.14 and 3,139.44

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Solution

The fourth proportional to 5,657.30, 7,807.14 and 3,139.44 is: 4,332.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.30 : 7,807.14 = 3,139.44 : x
  2. Step 2: Convert to fraction form
    5,657.30/7,807.14 = 3,139.44/x
  3. Step 3: Cross multiply
    5,657.30x = 7,807.14 × 3,139.44
  4. Step 4: Simplify right side
    5,657.30x = 24,510,047.60
  5. Step 5: Solve for x
    x = 24,510,047.60/5,657.30
  6. Step 6: Final answer
    x = 4,332.46

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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.