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Finding the Fourth Proportional to 8,547.15, 12,745.32 and 8,242.59

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Solution

The fourth proportional to 8,547.15, 12,745.32 and 8,242.59 is: 12,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.15 : 12,745.32 = 8,242.59 : x
  2. Step 2: Convert to fraction form
    8,547.15/12,745.32 = 8,242.59/x
  3. Step 3: Cross multiply
    8,547.15x = 12,745.32 × 8,242.59
  4. Step 4: Simplify right side
    8,547.15x = 105,054,447.18
  5. Step 5: Solve for x
    x = 105,054,447.18/8,547.15
  6. Step 6: Final answer
    x = 12,291.17

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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.