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Finding the Fourth Proportional to 2,615.80, 3,923.70 and 1,522.30

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Solution

The fourth proportional to 2,615.80, 3,923.70 and 1,522.30 is: 2,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.80 : 3,923.70 = 1,522.30 : x
  2. Step 2: Convert to fraction form
    2,615.80/3,923.70 = 1,522.30/x
  3. Step 3: Cross multiply
    2,615.80x = 3,923.70 × 1,522.30
  4. Step 4: Simplify right side
    2,615.80x = 5,973,048.51
  5. Step 5: Solve for x
    x = 5,973,048.51/2,615.80
  6. Step 6: Final answer
    x = 2,283.45

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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.