Home / 4,178.17-6,267.30-1,987.12

Finding the Fourth Proportional to 4,178.17, 6,267.30 and 1,987.12

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Solution

The fourth proportional to 4,178.17, 6,267.30 and 1,987.12 is: 2,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.17 : 6,267.30 = 1,987.12 : x
  2. Step 2: Convert to fraction form
    4,178.17/6,267.30 = 1,987.12/x
  3. Step 3: Cross multiply
    4,178.17x = 6,267.30 × 1,987.12
  4. Step 4: Simplify right side
    4,178.17x = 12,453,877.18
  5. Step 5: Solve for x
    x = 12,453,877.18/4,178.17
  6. Step 6: Final answer
    x = 2,980.70

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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.