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Finding the Fourth Proportional to 5,387.06, 7,435.06 and 3,118.07

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Solution

The fourth proportional to 5,387.06, 7,435.06 and 3,118.07 is: 4,303.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.06 : 7,435.06 = 3,118.07 : x
  2. Step 2: Convert to fraction form
    5,387.06/7,435.06 = 3,118.07/x
  3. Step 3: Cross multiply
    5,387.06x = 7,435.06 × 3,118.07
  4. Step 4: Simplify right side
    5,387.06x = 23,183,068.11
  5. Step 5: Solve for x
    x = 23,183,068.11/5,387.06
  6. Step 6: Final answer
    x = 4,303.47

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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.