Home / 1,026.64-1,539.60-981.28

Finding the Fourth Proportional to 1,026.64, 1,539.60 and 981.28

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Solution

The fourth proportional to 1,026.64, 1,539.60 and 981.28 is: 1,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.64 : 1,539.60 = 981.28 : x
  2. Step 2: Convert to fraction form
    1,026.64/1,539.60 = 981.28/x
  3. Step 3: Cross multiply
    1,026.64x = 1,539.60 × 981.28
  4. Step 4: Simplify right side
    1,026.64x = 1,510,778.69
  5. Step 5: Solve for x
    x = 1,510,778.69/1,026.64
  6. Step 6: Final answer
    x = 1,471.58

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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.