Home / 1,552.20-2,141.77-879.98

Finding the Fourth Proportional to 1,552.20, 2,141.77 and 879.98

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Solution

The fourth proportional to 1,552.20, 2,141.77 and 879.98 is: 1,214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.20 : 2,141.77 = 879.98 : x
  2. Step 2: Convert to fraction form
    1,552.20/2,141.77 = 879.98/x
  3. Step 3: Cross multiply
    1,552.20x = 2,141.77 × 879.98
  4. Step 4: Simplify right side
    1,552.20x = 1,884,714.76
  5. Step 5: Solve for x
    x = 1,884,714.76/1,552.20
  6. Step 6: Final answer
    x = 1,214.22

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1.5x scale

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.