Home / 1,412.19-1,948.14-1,225.44

Finding the Fourth Proportional to 1,412.19, 1,948.14 and 1,225.44

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Solution

The fourth proportional to 1,412.19, 1,948.14 and 1,225.44 is: 1,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.19 : 1,948.14 = 1,225.44 : x
  2. Step 2: Convert to fraction form
    1,412.19/1,948.14 = 1,225.44/x
  3. Step 3: Cross multiply
    1,412.19x = 1,948.14 × 1,225.44
  4. Step 4: Simplify right side
    1,412.19x = 2,387,328.68
  5. Step 5: Solve for x
    x = 2,387,328.68/1,412.19
  6. Step 6: Final answer
    x = 1,690.52

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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.