Home / 1,577.61-2,176.91-914.37

Finding the Fourth Proportional to 1,577.61, 2,176.91 and 914.37

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Solution

The fourth proportional to 1,577.61, 2,176.91 and 914.37 is: 1,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.61 : 2,176.91 = 914.37 : x
  2. Step 2: Convert to fraction form
    1,577.61/2,176.91 = 914.37/x
  3. Step 3: Cross multiply
    1,577.61x = 2,176.91 × 914.37
  4. Step 4: Simplify right side
    1,577.61x = 1,990,501.20
  5. Step 5: Solve for x
    x = 1,990,501.20/1,577.61
  6. Step 6: Final answer
    x = 1,261.72

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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.