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Finding the Fourth Proportional to 8,547.30, 11,790.90 and 5,009.90

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Solution

The fourth proportional to 8,547.30, 11,790.90 and 5,009.90 is: 6,911.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.30 : 11,790.90 = 5,009.90 : x
  2. Step 2: Convert to fraction form
    8,547.30/11,790.90 = 5,009.90/x
  3. Step 3: Cross multiply
    8,547.30x = 11,790.90 × 5,009.90
  4. Step 4: Simplify right side
    8,547.30x = 59,071,170.96
  5. Step 5: Solve for x
    x = 59,071,170.96/8,547.30
  6. Step 6: Final answer
    x = 6,911.09

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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.