Home / 1,726.24-2,382.46-980.05

Finding the Fourth Proportional to 1,726.24, 2,382.46 and 980.05

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Solution

The fourth proportional to 1,726.24, 2,382.46 and 980.05 is: 1,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.24 : 2,382.46 = 980.05 : x
  2. Step 2: Convert to fraction form
    1,726.24/2,382.46 = 980.05/x
  3. Step 3: Cross multiply
    1,726.24x = 2,382.46 × 980.05
  4. Step 4: Simplify right side
    1,726.24x = 2,334,918.01
  5. Step 5: Solve for x
    x = 2,334,918.01/1,726.24
  6. Step 6: Final answer
    x = 1,352.60

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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.