Home / 1,539.70-2,126.19-1,122.46

Finding the Fourth Proportional to 1,539.70, 2,126.19 and 1,122.46

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Solution

The fourth proportional to 1,539.70, 2,126.19 and 1,122.46 is: 1,550.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.70 : 2,126.19 = 1,122.46 : x
  2. Step 2: Convert to fraction form
    1,539.70/2,126.19 = 1,122.46/x
  3. Step 3: Cross multiply
    1,539.70x = 2,126.19 × 1,122.46
  4. Step 4: Simplify right side
    1,539.70x = 2,386,563.23
  5. Step 5: Solve for x
    x = 2,386,563.23/1,539.70
  6. Step 6: Final answer
    x = 1,550.02

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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.