Home / 4,178.32-6,262.08-1,987.72

Finding the Fourth Proportional to 4,178.32, 6,262.08 and 1,987.72

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Solution

The fourth proportional to 4,178.32, 6,262.08 and 1,987.72 is: 2,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.32 : 6,262.08 = 1,987.72 : x
  2. Step 2: Convert to fraction form
    4,178.32/6,262.08 = 1,987.72/x
  3. Step 3: Cross multiply
    4,178.32x = 6,262.08 × 1,987.72
  4. Step 4: Simplify right side
    4,178.32x = 12,447,261.66
  5. Step 5: Solve for x
    x = 12,447,261.66/4,178.32
  6. Step 6: Final answer
    x = 2,979.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.