Home / 1,530.96-2,293.70-981.78

Finding the Fourth Proportional to 1,530.96, 2,293.70 and 981.78

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Solution

The fourth proportional to 1,530.96, 2,293.70 and 981.78 is: 1,470.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.96 : 2,293.70 = 981.78 : x
  2. Step 2: Convert to fraction form
    1,530.96/2,293.70 = 981.78/x
  3. Step 3: Cross multiply
    1,530.96x = 2,293.70 × 981.78
  4. Step 4: Simplify right side
    1,530.96x = 2,251,908.79
  5. Step 5: Solve for x
    x = 2,251,908.79/1,530.96
  6. Step 6: Final answer
    x = 1,470.91

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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.