Home / 7,961.45-10,991.77-5,130.23

Finding the Fourth Proportional to 7,961.45, 10,991.77 and 5,130.23

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Solution

The fourth proportional to 7,961.45, 10,991.77 and 5,130.23 is: 7,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.45 : 10,991.77 = 5,130.23 : x
  2. Step 2: Convert to fraction form
    7,961.45/10,991.77 = 5,130.23/x
  3. Step 3: Cross multiply
    7,961.45x = 10,991.77 × 5,130.23
  4. Step 4: Simplify right side
    7,961.45x = 56,390,240.42
  5. Step 5: Solve for x
    x = 56,390,240.42/7,961.45
  6. Step 6: Final answer
    x = 7,082.92

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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.