Home / 7,115.42-10,673.70-1,921.22

Finding the Fourth Proportional to 7,115.42, 10,673.70 and 1,921.22

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Solution

The fourth proportional to 7,115.42, 10,673.70 and 1,921.22 is: 2,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.42 : 10,673.70 = 1,921.22 : x
  2. Step 2: Convert to fraction form
    7,115.42/10,673.70 = 1,921.22/x
  3. Step 3: Cross multiply
    7,115.42x = 10,673.70 × 1,921.22
  4. Step 4: Simplify right side
    7,115.42x = 20,506,525.91
  5. Step 5: Solve for x
    x = 20,506,525.91/7,115.42
  6. Step 6: Final answer
    x = 2,881.98

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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.