Home / 8,685.30-11,985.78-5,099.33

Finding the Fourth Proportional to 8,685.30, 11,985.78 and 5,099.33

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Solution

The fourth proportional to 8,685.30, 11,985.78 and 5,099.33 is: 7,037.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.30 : 11,985.78 = 5,099.33 : x
  2. Step 2: Convert to fraction form
    8,685.30/11,985.78 = 5,099.33/x
  3. Step 3: Cross multiply
    8,685.30x = 11,985.78 × 5,099.33
  4. Step 4: Simplify right side
    8,685.30x = 61,119,406.72
  5. Step 5: Solve for x
    x = 61,119,406.72/8,685.30
  6. Step 6: Final answer
    x = 7,037.11

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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.