Home / 4,678.92-7,020-3,125.16

Finding the Fourth Proportional to 4,678.92, 7,020 and 3,125.16

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Solution

The fourth proportional to 4,678.92, 7,020 and 3,125.16 is: 4,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.92 : 7,020 = 3,125.16 : x
  2. Step 2: Convert to fraction form
    4,678.92/7,020 = 3,125.16/x
  3. Step 3: Cross multiply
    4,678.92x = 7,020 × 3,125.16
  4. Step 4: Simplify right side
    4,678.92x = 21,938,623.20
  5. Step 5: Solve for x
    x = 21,938,623.20/4,678.92
  6. Step 6: Final answer
    x = 4,688.82

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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.