Home / 4,674.47-7,011.63-1,389.78

Finding the Fourth Proportional to 4,674.47, 7,011.63 and 1,389.78

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Solution

The fourth proportional to 4,674.47, 7,011.63 and 1,389.78 is: 2,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.47 : 7,011.63 = 1,389.78 : x
  2. Step 2: Convert to fraction form
    4,674.47/7,011.63 = 1,389.78/x
  3. Step 3: Cross multiply
    4,674.47x = 7,011.63 × 1,389.78
  4. Step 4: Simplify right side
    4,674.47x = 9,744,623.14
  5. Step 5: Solve for x
    x = 9,744,623.14/4,674.47
  6. Step 6: Final answer
    x = 2,084.65

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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.