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Finding the Fourth Proportional to 7,479, 10,325.88 and 4,689.36

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Solution

The fourth proportional to 7,479, 10,325.88 and 4,689.36 is: 6,474.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479 : 10,325.88 = 4,689.36 : x
  2. Step 2: Convert to fraction form
    7,479/10,325.88 = 4,689.36/x
  3. Step 3: Cross multiply
    7,479x = 10,325.88 × 4,689.36
  4. Step 4: Simplify right side
    7,479x = 48,421,768.64
  5. Step 5: Solve for x
    x = 48,421,768.64/7,479
  6. Step 6: Final answer
    x = 6,474.36

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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.