Home / 9,407.06-12,981.75-5,215.31

Finding the Fourth Proportional to 9,407.06, 12,981.75 and 5,215.31

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Solution

The fourth proportional to 9,407.06, 12,981.75 and 5,215.31 is: 7,197.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,407.06 : 12,981.75 = 5,215.31 : x
  2. Step 2: Convert to fraction form
    9,407.06/12,981.75 = 5,215.31/x
  3. Step 3: Cross multiply
    9,407.06x = 12,981.75 × 5,215.31
  4. Step 4: Simplify right side
    9,407.06x = 67,703,785.68
  5. Step 5: Solve for x
    x = 67,703,785.68/9,407.06
  6. Step 6: Final answer
    x = 7,197.13

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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.