Home / 1,559.07-2,148.54-1,116.20

Finding the Fourth Proportional to 1,559.07, 2,148.54 and 1,116.20

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Solution

The fourth proportional to 1,559.07, 2,148.54 and 1,116.20 is: 1,538.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.07 : 2,148.54 = 1,116.20 : x
  2. Step 2: Convert to fraction form
    1,559.07/2,148.54 = 1,116.20/x
  3. Step 3: Cross multiply
    1,559.07x = 2,148.54 × 1,116.20
  4. Step 4: Simplify right side
    1,559.07x = 2,398,189.61
  5. Step 5: Solve for x
    x = 2,398,189.61/1,559.07
  6. Step 6: Final answer
    x = 1,538.22

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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.