Home / 2,043.70-2,820.28-1,112.20

Finding the Fourth Proportional to 2,043.70, 2,820.28 and 1,112.20

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Solution

The fourth proportional to 2,043.70, 2,820.28 and 1,112.20 is: 1,534.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.70 : 2,820.28 = 1,112.20 : x
  2. Step 2: Convert to fraction form
    2,043.70/2,820.28 = 1,112.20/x
  3. Step 3: Cross multiply
    2,043.70x = 2,820.28 × 1,112.20
  4. Step 4: Simplify right side
    2,043.70x = 3,136,715.42
  5. Step 5: Solve for x
    x = 3,136,715.42/2,043.70
  6. Step 6: Final answer
    x = 1,534.82

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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.