Home / 4,278.20-6,417.90-2,085.14

Finding the Fourth Proportional to 4,278.20, 6,417.90 and 2,085.14

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Solution

The fourth proportional to 4,278.20, 6,417.90 and 2,085.14 is: 3,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.20 : 6,417.90 = 2,085.14 : x
  2. Step 2: Convert to fraction form
    4,278.20/6,417.90 = 2,085.14/x
  3. Step 3: Cross multiply
    4,278.20x = 6,417.90 × 2,085.14
  4. Step 4: Simplify right side
    4,278.20x = 13,382,220.01
  5. Step 5: Solve for x
    x = 13,382,220.01/4,278.20
  6. Step 6: Final answer
    x = 3,128.00

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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.