Home / 1,195.02-1,648.35-1,008.72

Finding the Fourth Proportional to 1,195.02, 1,648.35 and 1,008.72

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Solution

The fourth proportional to 1,195.02, 1,648.35 and 1,008.72 is: 1,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.02 : 1,648.35 = 1,008.72 : x
  2. Step 2: Convert to fraction form
    1,195.02/1,648.35 = 1,008.72/x
  3. Step 3: Cross multiply
    1,195.02x = 1,648.35 × 1,008.72
  4. Step 4: Simplify right side
    1,195.02x = 1,662,723.61
  5. Step 5: Solve for x
    x = 1,662,723.61/1,195.02
  6. Step 6: Final answer
    x = 1,391.38

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Half scale
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Double scale
Find fourth proportional to 1,196.02, 1,649.73 and 1,009.72
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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.