Home / 1,558.79-2,331.28-1,386.66

Finding the Fourth Proportional to 1,558.79, 2,331.28 and 1,386.66

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Solution

The fourth proportional to 1,558.79, 2,331.28 and 1,386.66 is: 2,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.79 : 2,331.28 = 1,386.66 : x
  2. Step 2: Convert to fraction form
    1,558.79/2,331.28 = 1,386.66/x
  3. Step 3: Cross multiply
    1,558.79x = 2,331.28 × 1,386.66
  4. Step 4: Simplify right side
    1,558.79x = 3,232,692.72
  5. Step 5: Solve for x
    x = 3,232,692.72/1,558.79
  6. Step 6: Final answer
    x = 2,073.85

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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.