Home / 1,648.26-2,274.80-985.47

Finding the Fourth Proportional to 1,648.26, 2,274.80 and 985.47

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Solution

The fourth proportional to 1,648.26, 2,274.80 and 985.47 is: 1,360.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.26 : 2,274.80 = 985.47 : x
  2. Step 2: Convert to fraction form
    1,648.26/2,274.80 = 985.47/x
  3. Step 3: Cross multiply
    1,648.26x = 2,274.80 × 985.47
  4. Step 4: Simplify right side
    1,648.26x = 2,241,742.23
  5. Step 5: Solve for x
    x = 2,241,742.23/1,648.26
  6. Step 6: Final answer
    x = 1,360.07

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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.