Home / 7,923.68-10,938.80-7,400.16

Finding the Fourth Proportional to 7,923.68, 10,938.80 and 7,400.16

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Solution

The fourth proportional to 7,923.68, 10,938.80 and 7,400.16 is: 10,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.68 : 10,938.80 = 7,400.16 : x
  2. Step 2: Convert to fraction form
    7,923.68/10,938.80 = 7,400.16/x
  3. Step 3: Cross multiply
    7,923.68x = 10,938.80 × 7,400.16
  4. Step 4: Simplify right side
    7,923.68x = 80,948,870.21
  5. Step 5: Solve for x
    x = 80,948,870.21/7,923.68
  6. Step 6: Final answer
    x = 10,216.07

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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.