Home / 6,780.42-9,360.90-5,174.46

Finding the Fourth Proportional to 6,780.42, 9,360.90 and 5,174.46

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Solution

The fourth proportional to 6,780.42, 9,360.90 and 5,174.46 is: 7,143.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.42 : 9,360.90 = 5,174.46 : x
  2. Step 2: Convert to fraction form
    6,780.42/9,360.90 = 5,174.46/x
  3. Step 3: Cross multiply
    6,780.42x = 9,360.90 × 5,174.46
  4. Step 4: Simplify right side
    6,780.42x = 48,437,602.61
  5. Step 5: Solve for x
    x = 48,437,602.61/6,780.42
  6. Step 6: Final answer
    x = 7,143.75

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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.