Home / 3,082.65-4,254.15-1,685.40

Finding the Fourth Proportional to 3,082.65, 4,254.15 and 1,685.40

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Solution

The fourth proportional to 3,082.65, 4,254.15 and 1,685.40 is: 2,325.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.65 : 4,254.15 = 1,685.40 : x
  2. Step 2: Convert to fraction form
    3,082.65/4,254.15 = 1,685.40/x
  3. Step 3: Cross multiply
    3,082.65x = 4,254.15 × 1,685.40
  4. Step 4: Simplify right side
    3,082.65x = 7,169,944.41
  5. Step 5: Solve for x
    x = 7,169,944.41/3,082.65
  6. Step 6: Final answer
    x = 2,325.90

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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.