Home / 9,386.08-12,930.20-8,712.16

Finding the Fourth Proportional to 9,386.08, 12,930.20 and 8,712.16

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Solution

The fourth proportional to 9,386.08, 12,930.20 and 8,712.16 is: 12,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,386.08 : 12,930.20 = 8,712.16 : x
  2. Step 2: Convert to fraction form
    9,386.08/12,930.20 = 8,712.16/x
  3. Step 3: Cross multiply
    9,386.08x = 12,930.20 × 8,712.16
  4. Step 4: Simplify right side
    9,386.08x = 112,649,971.23
  5. Step 5: Solve for x
    x = 112,649,971.23/9,386.08
  6. Step 6: Final answer
    x = 12,001.81

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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.