Home / 4,978.47-6,870.26-2,740.29

Finding the Fourth Proportional to 4,978.47, 6,870.26 and 2,740.29

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Solution

The fourth proportional to 4,978.47, 6,870.26 and 2,740.29 is: 3,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.47 : 6,870.26 = 2,740.29 : x
  2. Step 2: Convert to fraction form
    4,978.47/6,870.26 = 2,740.29/x
  3. Step 3: Cross multiply
    4,978.47x = 6,870.26 × 2,740.29
  4. Step 4: Simplify right side
    4,978.47x = 18,826,470.45
  5. Step 5: Solve for x
    x = 18,826,470.45/4,978.47
  6. Step 6: Final answer
    x = 3,781.58

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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.