Home / 4,978.20-6,870.03-2,740.13

Finding the Fourth Proportional to 4,978.20, 6,870.03 and 2,740.13

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Solution

The fourth proportional to 4,978.20, 6,870.03 and 2,740.13 is: 3,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.20 : 6,870.03 = 2,740.13 : x
  2. Step 2: Convert to fraction form
    4,978.20/6,870.03 = 2,740.13/x
  3. Step 3: Cross multiply
    4,978.20x = 6,870.03 × 2,740.13
  4. Step 4: Simplify right side
    4,978.20x = 18,824,760.29
  5. Step 5: Solve for x
    x = 18,824,760.29/4,978.20
  6. Step 6: Final answer
    x = 3,781.44

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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.