Home / 2,349.42-3,242.14-1,287.19

Finding the Fourth Proportional to 2,349.42, 3,242.14 and 1,287.19

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Solution

The fourth proportional to 2,349.42, 3,242.14 and 1,287.19 is: 1,776.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.42 : 3,242.14 = 1,287.19 : x
  2. Step 2: Convert to fraction form
    2,349.42/3,242.14 = 1,287.19/x
  3. Step 3: Cross multiply
    2,349.42x = 3,242.14 × 1,287.19
  4. Step 4: Simplify right side
    2,349.42x = 4,173,250.19
  5. Step 5: Solve for x
    x = 4,173,250.19/2,349.42
  6. Step 6: Final answer
    x = 1,776.29

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Half scale
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Double scale
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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.