Home / 1,370.46-2,056.47-579.76

Finding the Fourth Proportional to 1,370.46, 2,056.47 and 579.76

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Solution

The fourth proportional to 1,370.46, 2,056.47 and 579.76 is: 869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.46 : 2,056.47 = 579.76 : x
  2. Step 2: Convert to fraction form
    1,370.46/2,056.47 = 579.76/x
  3. Step 3: Cross multiply
    1,370.46x = 2,056.47 × 579.76
  4. Step 4: Simplify right side
    1,370.46x = 1,192,256.08
  5. Step 5: Solve for x
    x = 1,192,256.08/1,370.46
  6. Step 6: Final answer
    x = 869.97

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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.