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Finding the Fourth Proportional to 8,661.50, 13,013.05 and 5,547.54

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Solution

The fourth proportional to 8,661.50, 13,013.05 and 5,547.54 is: 8,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.50 : 13,013.05 = 5,547.54 : x
  2. Step 2: Convert to fraction form
    8,661.50/13,013.05 = 5,547.54/x
  3. Step 3: Cross multiply
    8,661.50x = 13,013.05 × 5,547.54
  4. Step 4: Simplify right side
    8,661.50x = 72,190,415.40
  5. Step 5: Solve for x
    x = 72,190,415.40/8,661.50
  6. Step 6: Final answer
    x = 8,334.63

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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.