Home / 8,085.54-11,152.03-7,139.66

Finding the Fourth Proportional to 8,085.54, 11,152.03 and 7,139.66

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Solution

The fourth proportional to 8,085.54, 11,152.03 and 7,139.66 is: 9,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.54 : 11,152.03 = 7,139.66 : x
  2. Step 2: Convert to fraction form
    8,085.54/11,152.03 = 7,139.66/x
  3. Step 3: Cross multiply
    8,085.54x = 11,152.03 × 7,139.66
  4. Step 4: Simplify right side
    8,085.54x = 79,621,666.81
  5. Step 5: Solve for x
    x = 79,621,666.81/8,085.54
  6. Step 6: Final answer
    x = 9,847.41

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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.