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Finding the Fourth Proportional to 4,984.12, 7,474.94 and 1,521.32

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Solution

The fourth proportional to 4,984.12, 7,474.94 and 1,521.32 is: 2,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.12 : 7,474.94 = 1,521.32 : x
  2. Step 2: Convert to fraction form
    4,984.12/7,474.94 = 1,521.32/x
  3. Step 3: Cross multiply
    4,984.12x = 7,474.94 × 1,521.32
  4. Step 4: Simplify right side
    4,984.12x = 11,371,775.72
  5. Step 5: Solve for x
    x = 11,371,775.72/4,984.12
  6. Step 6: Final answer
    x = 2,281.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.