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Finding the Fourth Proportional to 9,369.78, 14,060.10 and 4,987.20

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Solution

The fourth proportional to 9,369.78, 14,060.10 and 4,987.20 is: 7,483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.78 : 14,060.10 = 4,987.20 : x
  2. Step 2: Convert to fraction form
    9,369.78/14,060.10 = 4,987.20/x
  3. Step 3: Cross multiply
    9,369.78x = 14,060.10 × 4,987.20
  4. Step 4: Simplify right side
    9,369.78x = 70,120,530.72
  5. Step 5: Solve for x
    x = 70,120,530.72/9,369.78
  6. Step 6: Final answer
    x = 7,483.69

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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.