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Finding the Fourth Proportional to 8,886.92, 12,259.35 and 7,210.22

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Solution

The fourth proportional to 8,886.92, 12,259.35 and 7,210.22 is: 9,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.92 : 12,259.35 = 7,210.22 : x
  2. Step 2: Convert to fraction form
    8,886.92/12,259.35 = 7,210.22/x
  3. Step 3: Cross multiply
    8,886.92x = 12,259.35 × 7,210.22
  4. Step 4: Simplify right side
    8,886.92x = 88,392,549.26
  5. Step 5: Solve for x
    x = 88,392,549.26/8,886.92
  6. Step 6: Final answer
    x = 9,946.37

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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.