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Finding the Fourth Proportional to 7,470.72, 11,205.36 and 3,087

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Solution

The fourth proportional to 7,470.72, 11,205.36 and 3,087 is: 4,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,470.72 : 11,205.36 = 3,087 : x
  2. Step 2: Convert to fraction form
    7,470.72/11,205.36 = 3,087/x
  3. Step 3: Cross multiply
    7,470.72x = 11,205.36 × 3,087
  4. Step 4: Simplify right side
    7,470.72x = 34,590,946.32
  5. Step 5: Solve for x
    x = 34,590,946.32/7,470.72
  6. Step 6: Final answer
    x = 4,630.20

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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.