Home / 1,026.50-1,539.61-286.16

Finding the Fourth Proportional to 1,026.50, 1,539.61 and 286.16

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Solution

The fourth proportional to 1,026.50, 1,539.61 and 286.16 is: 429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.50 : 1,539.61 = 286.16 : x
  2. Step 2: Convert to fraction form
    1,026.50/1,539.61 = 286.16/x
  3. Step 3: Cross multiply
    1,026.50x = 1,539.61 × 286.16
  4. Step 4: Simplify right side
    1,026.50x = 440,574.80
  5. Step 5: Solve for x
    x = 440,574.80/1,026.50
  6. Step 6: Final answer
    x = 429.20

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.