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Finding the Fourth Proportional to 9,345.36, 12,898.08 and 5,619.36

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Solution

The fourth proportional to 9,345.36, 12,898.08 and 5,619.36 is: 7,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,345.36 : 12,898.08 = 5,619.36 : x
  2. Step 2: Convert to fraction form
    9,345.36/12,898.08 = 5,619.36/x
  3. Step 3: Cross multiply
    9,345.36x = 12,898.08 × 5,619.36
  4. Step 4: Simplify right side
    9,345.36x = 72,478,954.83
  5. Step 5: Solve for x
    x = 72,478,954.83/9,345.36
  6. Step 6: Final answer
    x = 7,755.61

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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.