Home / 3,987.60-5,497.72-2,937.84

Finding the Fourth Proportional to 3,987.60, 5,497.72 and 2,937.84

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Solution

The fourth proportional to 3,987.60, 5,497.72 and 2,937.84 is: 4,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.60 : 5,497.72 = 2,937.84 : x
  2. Step 2: Convert to fraction form
    3,987.60/5,497.72 = 2,937.84/x
  3. Step 3: Cross multiply
    3,987.60x = 5,497.72 × 2,937.84
  4. Step 4: Simplify right side
    3,987.60x = 16,151,421.72
  5. Step 5: Solve for x
    x = 16,151,421.72/3,987.60
  6. Step 6: Final answer
    x = 4,050.41

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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.