Home / 7,070.28-9,756.96-3,926.40

Finding the Fourth Proportional to 7,070.28, 9,756.96 and 3,926.40

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Solution

The fourth proportional to 7,070.28, 9,756.96 and 3,926.40 is: 5,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.28 : 9,756.96 = 3,926.40 : x
  2. Step 2: Convert to fraction form
    7,070.28/9,756.96 = 3,926.40/x
  3. Step 3: Cross multiply
    7,070.28x = 9,756.96 × 3,926.40
  4. Step 4: Simplify right side
    7,070.28x = 38,309,727.74
  5. Step 5: Solve for x
    x = 38,309,727.74/7,070.28
  6. Step 6: Final answer
    x = 5,418.42

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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.