Home / 4,978.53-6,870.39-2,740.35

Finding the Fourth Proportional to 4,978.53, 6,870.39 and 2,740.35

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Solution

The fourth proportional to 4,978.53, 6,870.39 and 2,740.35 is: 3,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.53 : 6,870.39 = 2,740.35 : x
  2. Step 2: Convert to fraction form
    4,978.53/6,870.39 = 2,740.35/x
  3. Step 3: Cross multiply
    4,978.53x = 6,870.39 × 2,740.35
  4. Step 4: Simplify right side
    4,978.53x = 18,827,273.24
  5. Step 5: Solve for x
    x = 18,827,273.24/4,978.53
  6. Step 6: Final answer
    x = 3,781.69

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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.