Home / 1,564.06-2,158.10-891.85

Finding the Fourth Proportional to 1,564.06, 2,158.10 and 891.85

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Solution

The fourth proportional to 1,564.06, 2,158.10 and 891.85 is: 1,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.06 : 2,158.10 = 891.85 : x
  2. Step 2: Convert to fraction form
    1,564.06/2,158.10 = 891.85/x
  3. Step 3: Cross multiply
    1,564.06x = 2,158.10 × 891.85
  4. Step 4: Simplify right side
    1,564.06x = 1,924,712.13
  5. Step 5: Solve for x
    x = 1,924,712.13/1,564.06
  6. Step 6: Final answer
    x = 1,230.59

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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.