Home / 7,085.10-10,626.95-2,154.78

Finding the Fourth Proportional to 7,085.10, 10,626.95 and 2,154.78

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Solution

The fourth proportional to 7,085.10, 10,626.95 and 2,154.78 is: 3,231.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.10 : 10,626.95 = 2,154.78 : x
  2. Step 2: Convert to fraction form
    7,085.10/10,626.95 = 2,154.78/x
  3. Step 3: Cross multiply
    7,085.10x = 10,626.95 × 2,154.78
  4. Step 4: Simplify right side
    7,085.10x = 22,898,739.32
  5. Step 5: Solve for x
    x = 22,898,739.32/7,085.10
  6. Step 6: Final answer
    x = 3,231.96

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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.