Home / 1,561.84-2,152.38-1,118.98

Finding the Fourth Proportional to 1,561.84, 2,152.38 and 1,118.98

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Solution

The fourth proportional to 1,561.84, 2,152.38 and 1,118.98 is: 1,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.84 : 2,152.38 = 1,118.98 : x
  2. Step 2: Convert to fraction form
    1,561.84/2,152.38 = 1,118.98/x
  3. Step 3: Cross multiply
    1,561.84x = 2,152.38 × 1,118.98
  4. Step 4: Simplify right side
    1,561.84x = 2,408,470.17
  5. Step 5: Solve for x
    x = 2,408,470.17/1,561.84
  6. Step 6: Final answer
    x = 1,542.07

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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.