Home / 7,125.71-10,688.78-2,445.65

Finding the Fourth Proportional to 7,125.71, 10,688.78 and 2,445.65

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Solution

The fourth proportional to 7,125.71, 10,688.78 and 2,445.65 is: 3,668.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.71 : 10,688.78 = 2,445.65 : x
  2. Step 2: Convert to fraction form
    7,125.71/10,688.78 = 2,445.65/x
  3. Step 3: Cross multiply
    7,125.71x = 10,688.78 × 2,445.65
  4. Step 4: Simplify right side
    7,125.71x = 26,140,949.13
  5. Step 5: Solve for x
    x = 26,140,949.13/7,125.71
  6. Step 6: Final answer
    x = 3,668.54

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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.