Home / 7,085.87-10,628.10-2,155.55

Finding the Fourth Proportional to 7,085.87, 10,628.10 and 2,155.55

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Solution

The fourth proportional to 7,085.87, 10,628.10 and 2,155.55 is: 3,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.87 : 10,628.10 = 2,155.55 : x
  2. Step 2: Convert to fraction form
    7,085.87/10,628.10 = 2,155.55/x
  3. Step 3: Cross multiply
    7,085.87x = 10,628.10 × 2,155.55
  4. Step 4: Simplify right side
    7,085.87x = 22,909,347.81
  5. Step 5: Solve for x
    x = 22,909,347.81/7,085.87
  6. Step 6: Final answer
    x = 3,233.11

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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.