Home / 2,349.49-3,242.19-1,287.18

Finding the Fourth Proportional to 2,349.49, 3,242.19 and 1,287.18

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Solution

The fourth proportional to 2,349.49, 3,242.19 and 1,287.18 is: 1,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.49 : 3,242.19 = 1,287.18 : x
  2. Step 2: Convert to fraction form
    2,349.49/3,242.19 = 1,287.18/x
  3. Step 3: Cross multiply
    2,349.49x = 3,242.19 × 1,287.18
  4. Step 4: Simplify right side
    2,349.49x = 4,173,282.12
  5. Step 5: Solve for x
    x = 4,173,282.12/2,349.49
  6. Step 6: Final answer
    x = 1,776.25

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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.