Home / 7,961.28-10,980.12-5,570.36

Finding the Fourth Proportional to 7,961.28, 10,980.12 and 5,570.36

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Solution

The fourth proportional to 7,961.28, 10,980.12 and 5,570.36 is: 7,682.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.28 : 10,980.12 = 5,570.36 : x
  2. Step 2: Convert to fraction form
    7,961.28/10,980.12 = 5,570.36/x
  3. Step 3: Cross multiply
    7,961.28x = 10,980.12 × 5,570.36
  4. Step 4: Simplify right side
    7,961.28x = 61,163,221.24
  5. Step 5: Solve for x
    x = 61,163,221.24/7,961.28
  6. Step 6: Final answer
    x = 7,682.59

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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.