Home / 6,146.30-9,217.20-1,987.40

Finding the Fourth Proportional to 6,146.30, 9,217.20 and 1,987.40

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Solution

The fourth proportional to 6,146.30, 9,217.20 and 1,987.40 is: 2,980.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,146.30 : 9,217.20 = 1,987.40 : x
  2. Step 2: Convert to fraction form
    6,146.30/9,217.20 = 1,987.40/x
  3. Step 3: Cross multiply
    6,146.30x = 9,217.20 × 1,987.40
  4. Step 4: Simplify right side
    6,146.30x = 18,318,263.28
  5. Step 5: Solve for x
    x = 18,318,263.28/6,146.30
  6. Step 6: Final answer
    x = 2,980.37

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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.