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Finding the Fourth Proportional to 7,225.76, 9,971.74 and 4,392.16

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Solution

The fourth proportional to 7,225.76, 9,971.74 and 4,392.16 is: 6,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.76 : 9,971.74 = 4,392.16 : x
  2. Step 2: Convert to fraction form
    7,225.76/9,971.74 = 4,392.16/x
  3. Step 3: Cross multiply
    7,225.76x = 9,971.74 × 4,392.16
  4. Step 4: Simplify right side
    7,225.76x = 43,797,477.56
  5. Step 5: Solve for x
    x = 43,797,477.56/7,225.76
  6. Step 6: Final answer
    x = 6,061.30

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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.