Home / 2,041.21-2,816.85-1,109.71

Finding the Fourth Proportional to 2,041.21, 2,816.85 and 1,109.71

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Solution

The fourth proportional to 2,041.21, 2,816.85 and 1,109.71 is: 1,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,041.21 : 2,816.85 = 1,109.71 : x
  2. Step 2: Convert to fraction form
    2,041.21/2,816.85 = 1,109.71/x
  3. Step 3: Cross multiply
    2,041.21x = 2,816.85 × 1,109.71
  4. Step 4: Simplify right side
    2,041.21x = 3,125,886.61
  5. Step 5: Solve for x
    x = 3,125,886.61/2,041.21
  6. Step 6: Final answer
    x = 1,531.39

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Double scale
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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.