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Finding the Fourth Proportional to 9,315.01, 12,855.04 and 5,336.89

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Solution

The fourth proportional to 9,315.01, 12,855.04 and 5,336.89 is: 7,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.01 : 12,855.04 = 5,336.89 : x
  2. Step 2: Convert to fraction form
    9,315.01/12,855.04 = 5,336.89/x
  3. Step 3: Cross multiply
    9,315.01x = 12,855.04 × 5,336.89
  4. Step 4: Simplify right side
    9,315.01x = 68,605,967.17
  5. Step 5: Solve for x
    x = 68,605,967.17/9,315.01
  6. Step 6: Final answer
    x = 7,365.10

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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.