Home / 8,340.89-11,510.09-4,985.55

Finding the Fourth Proportional to 8,340.89, 11,510.09 and 4,985.55

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Solution

The fourth proportional to 8,340.89, 11,510.09 and 4,985.55 is: 6,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.89 : 11,510.09 = 4,985.55 : x
  2. Step 2: Convert to fraction form
    8,340.89/11,510.09 = 4,985.55/x
  3. Step 3: Cross multiply
    8,340.89x = 11,510.09 × 4,985.55
  4. Step 4: Simplify right side
    8,340.89x = 57,384,104.27
  5. Step 5: Solve for x
    x = 57,384,104.27/8,340.89
  6. Step 6: Final answer
    x = 6,879.86

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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.