Home / 2,506.80-3,459.24-1,387.68

Finding the Fourth Proportional to 2,506.80, 3,459.24 and 1,387.68

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Solution

The fourth proportional to 2,506.80, 3,459.24 and 1,387.68 is: 1,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,506.80 : 3,459.24 = 1,387.68 : x
  2. Step 2: Convert to fraction form
    2,506.80/3,459.24 = 1,387.68/x
  3. Step 3: Cross multiply
    2,506.80x = 3,459.24 × 1,387.68
  4. Step 4: Simplify right side
    2,506.80x = 4,800,318.16
  5. Step 5: Solve for x
    x = 4,800,318.16/2,506.80
  6. Step 6: Final answer
    x = 1,914.92

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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.