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Finding the Fourth Proportional to 5,278.55, 7,923.06 and 4,689.43

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Solution

The fourth proportional to 5,278.55, 7,923.06 and 4,689.43 is: 7,038.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.55 : 7,923.06 = 4,689.43 : x
  2. Step 2: Convert to fraction form
    5,278.55/7,923.06 = 4,689.43/x
  3. Step 3: Cross multiply
    5,278.55x = 7,923.06 × 4,689.43
  4. Step 4: Simplify right side
    5,278.55x = 37,154,615.45
  5. Step 5: Solve for x
    x = 37,154,615.45/5,278.55
  6. Step 6: Final answer
    x = 7,038.79

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1.5x scale

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.