Home / 9,186.47-12,678.02-5,207.95

Finding the Fourth Proportional to 9,186.47, 12,678.02 and 5,207.95

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Solution

The fourth proportional to 9,186.47, 12,678.02 and 5,207.95 is: 7,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.47 : 12,678.02 = 5,207.95 : x
  2. Step 2: Convert to fraction form
    9,186.47/12,678.02 = 5,207.95/x
  3. Step 3: Cross multiply
    9,186.47x = 12,678.02 × 5,207.95
  4. Step 4: Simplify right side
    9,186.47x = 66,026,494.26
  5. Step 5: Solve for x
    x = 66,026,494.26/9,186.47
  6. Step 6: Final answer
    x = 7,187.36

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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.