Home / 1,412.89-1,948.58-1,117.64

Finding the Fourth Proportional to 1,412.89, 1,948.58 and 1,117.64

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Solution

The fourth proportional to 1,412.89, 1,948.58 and 1,117.64 is: 1,541.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.89 : 1,948.58 = 1,117.64 : x
  2. Step 2: Convert to fraction form
    1,412.89/1,948.58 = 1,117.64/x
  3. Step 3: Cross multiply
    1,412.89x = 1,948.58 × 1,117.64
  4. Step 4: Simplify right side
    1,412.89x = 2,177,805.36
  5. Step 5: Solve for x
    x = 2,177,805.36/1,412.89
  6. Step 6: Final answer
    x = 1,541.39

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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.