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Finding the Fourth Proportional to 9,130.04, 12,568.98 and 8,712.08

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Solution

The fourth proportional to 9,130.04, 12,568.98 and 8,712.08 is: 11,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.04 : 12,568.98 = 8,712.08 : x
  2. Step 2: Convert to fraction form
    9,130.04/12,568.98 = 8,712.08/x
  3. Step 3: Cross multiply
    9,130.04x = 12,568.98 × 8,712.08
  4. Step 4: Simplify right side
    9,130.04x = 109,501,959.28
  5. Step 5: Solve for x
    x = 109,501,959.28/9,130.04
  6. Step 6: Final answer
    x = 11,993.59

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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.