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Finding the Fourth Proportional to 7,225.58, 9,964.20 and 4,393.40

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Solution

The fourth proportional to 7,225.58, 9,964.20 and 4,393.40 is: 6,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.58 : 9,964.20 = 4,393.40 : x
  2. Step 2: Convert to fraction form
    7,225.58/9,964.20 = 4,393.40/x
  3. Step 3: Cross multiply
    7,225.58x = 9,964.20 × 4,393.40
  4. Step 4: Simplify right side
    7,225.58x = 43,776,716.28
  5. Step 5: Solve for x
    x = 43,776,716.28/7,225.58
  6. Step 6: Final answer
    x = 6,058.57

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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.