Home / 6,140.60-9,210.90-4,182.20

Finding the Fourth Proportional to 6,140.60, 9,210.90 and 4,182.20

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Solution

The fourth proportional to 6,140.60, 9,210.90 and 4,182.20 is: 6,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.60 : 9,210.90 = 4,182.20 : x
  2. Step 2: Convert to fraction form
    6,140.60/9,210.90 = 4,182.20/x
  3. Step 3: Cross multiply
    6,140.60x = 9,210.90 × 4,182.20
  4. Step 4: Simplify right side
    6,140.60x = 38,521,825.98
  5. Step 5: Solve for x
    x = 38,521,825.98/6,140.60
  6. Step 6: Final answer
    x = 6,273.30

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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.