Home / 4,140.29-5,712.62-2,798.40

Finding the Fourth Proportional to 4,140.29, 5,712.62 and 2,798.40

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Solution

The fourth proportional to 4,140.29, 5,712.62 and 2,798.40 is: 3,861.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.29 : 5,712.62 = 2,798.40 : x
  2. Step 2: Convert to fraction form
    4,140.29/5,712.62 = 2,798.40/x
  3. Step 3: Cross multiply
    4,140.29x = 5,712.62 × 2,798.40
  4. Step 4: Simplify right side
    4,140.29x = 15,986,202.80
  5. Step 5: Solve for x
    x = 15,986,202.80/4,140.29
  6. Step 6: Final answer
    x = 3,861.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.