Home / 1,649.02-2,275.58-985.48

Finding the Fourth Proportional to 1,649.02, 2,275.58 and 985.48

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Solution

The fourth proportional to 1,649.02, 2,275.58 and 985.48 is: 1,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.02 : 2,275.58 = 985.48 : x
  2. Step 2: Convert to fraction form
    1,649.02/2,275.58 = 985.48/x
  3. Step 3: Cross multiply
    1,649.02x = 2,275.58 × 985.48
  4. Step 4: Simplify right side
    1,649.02x = 2,242,538.58
  5. Step 5: Solve for x
    x = 2,242,538.58/1,649.02
  6. Step 6: Final answer
    x = 1,359.92

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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.