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Finding the Fourth Proportional to 7,624, 10,521.44 and 4,312

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Solution

The fourth proportional to 7,624, 10,521.44 and 4,312 is: 5,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,624 : 10,521.44 = 4,312 : x
  2. Step 2: Convert to fraction form
    7,624/10,521.44 = 4,312/x
  3. Step 3: Cross multiply
    7,624x = 10,521.44 × 4,312
  4. Step 4: Simplify right side
    7,624x = 45,368,449.28
  5. Step 5: Solve for x
    x = 45,368,449.28/7,624
  6. Step 6: Final answer
    x = 5,950.74

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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.