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Finding the Fourth Proportional to 7,235.36, 9,981.90 and 4,719.68

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Solution

The fourth proportional to 7,235.36, 9,981.90 and 4,719.68 is: 6,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.36 : 9,981.90 = 4,719.68 : x
  2. Step 2: Convert to fraction form
    7,235.36/9,981.90 = 4,719.68/x
  3. Step 3: Cross multiply
    7,235.36x = 9,981.90 × 4,719.68
  4. Step 4: Simplify right side
    7,235.36x = 47,111,373.79
  5. Step 5: Solve for x
    x = 47,111,373.79/7,235.36
  6. Step 6: Final answer
    x = 6,511.27

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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.