Home / 1,080.19-1,490.23-607.97

Finding the Fourth Proportional to 1,080.19, 1,490.23 and 607.97

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Solution

The fourth proportional to 1,080.19, 1,490.23 and 607.97 is: 838.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.19 : 1,490.23 = 607.97 : x
  2. Step 2: Convert to fraction form
    1,080.19/1,490.23 = 607.97/x
  3. Step 3: Cross multiply
    1,080.19x = 1,490.23 × 607.97
  4. Step 4: Simplify right side
    1,080.19x = 906,015.13
  5. Step 5: Solve for x
    x = 906,015.13/1,080.19
  6. Step 6: Final answer
    x = 838.76

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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.