Home / 5,316-7,975.15-1,618.52

Finding the Fourth Proportional to 5,316, 7,975.15 and 1,618.52

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Solution

The fourth proportional to 5,316, 7,975.15 and 1,618.52 is: 2,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316 : 7,975.15 = 1,618.52 : x
  2. Step 2: Convert to fraction form
    5,316/7,975.15 = 1,618.52/x
  3. Step 3: Cross multiply
    5,316x = 7,975.15 × 1,618.52
  4. Step 4: Simplify right side
    5,316x = 12,907,939.78
  5. Step 5: Solve for x
    x = 12,907,939.78/5,316
  6. Step 6: Final answer
    x = 2,428.13

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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.