Home / 2,161.32-2,981.60-1,276.53

Finding the Fourth Proportional to 2,161.32, 2,981.60 and 1,276.53

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Solution

The fourth proportional to 2,161.32, 2,981.60 and 1,276.53 is: 1,761.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.32 : 2,981.60 = 1,276.53 : x
  2. Step 2: Convert to fraction form
    2,161.32/2,981.60 = 1,276.53/x
  3. Step 3: Cross multiply
    2,161.32x = 2,981.60 × 1,276.53
  4. Step 4: Simplify right side
    2,161.32x = 3,806,095.47
  5. Step 5: Solve for x
    x = 3,806,095.47/2,161.32
  6. Step 6: Final answer
    x = 1,761.01

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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.