Home / 2,378.38-3,568.29-1,686.40

Finding the Fourth Proportional to 2,378.38, 3,568.29 and 1,686.40

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Solution

The fourth proportional to 2,378.38, 3,568.29 and 1,686.40 is: 2,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.38 : 3,568.29 = 1,686.40 : x
  2. Step 2: Convert to fraction form
    2,378.38/3,568.29 = 1,686.40/x
  3. Step 3: Cross multiply
    2,378.38x = 3,568.29 × 1,686.40
  4. Step 4: Simplify right side
    2,378.38x = 6,017,564.26
  5. Step 5: Solve for x
    x = 6,017,564.26/2,378.38
  6. Step 6: Final answer
    x = 2,530.11

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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.