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Finding the Fourth Proportional to 8,632.95, 12,886.40 and 7,408.23

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Solution

The fourth proportional to 8,632.95, 12,886.40 and 7,408.23 is: 11,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.95 : 12,886.40 = 7,408.23 : x
  2. Step 2: Convert to fraction form
    8,632.95/12,886.40 = 7,408.23/x
  3. Step 3: Cross multiply
    8,632.95x = 12,886.40 × 7,408.23
  4. Step 4: Simplify right side
    8,632.95x = 95,465,457.75
  5. Step 5: Solve for x
    x = 95,465,457.75/8,632.95
  6. Step 6: Final answer
    x = 11,058.26

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.