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Finding the Fourth Proportional to 8,547.51, 12,779.12 and 7,245.79

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Solution

The fourth proportional to 8,547.51, 12,779.12 and 7,245.79 is: 10,832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.51 : 12,779.12 = 7,245.79 : x
  2. Step 2: Convert to fraction form
    8,547.51/12,779.12 = 7,245.79/x
  3. Step 3: Cross multiply
    8,547.51x = 12,779.12 × 7,245.79
  4. Step 4: Simplify right side
    8,547.51x = 92,594,821.63
  5. Step 5: Solve for x
    x = 92,594,821.63/8,547.51
  6. Step 6: Final answer
    x = 10,832.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.