Home / 1,673.79-2,311.40-1,077.32

Finding the Fourth Proportional to 1,673.79, 2,311.40 and 1,077.32

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Solution

The fourth proportional to 1,673.79, 2,311.40 and 1,077.32 is: 1,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.79 : 2,311.40 = 1,077.32 : x
  2. Step 2: Convert to fraction form
    1,673.79/2,311.40 = 1,077.32/x
  3. Step 3: Cross multiply
    1,673.79x = 2,311.40 × 1,077.32
  4. Step 4: Simplify right side
    1,673.79x = 2,490,125.92
  5. Step 5: Solve for x
    x = 2,490,125.92/1,673.79
  6. Step 6: Final answer
    x = 1,487.72

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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.