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Finding the Fourth Proportional to 2,015.80, 3,023.70 and 555.12

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Solution

The fourth proportional to 2,015.80, 3,023.70 and 555.12 is: 832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.80 : 3,023.70 = 555.12 : x
  2. Step 2: Convert to fraction form
    2,015.80/3,023.70 = 555.12/x
  3. Step 3: Cross multiply
    2,015.80x = 3,023.70 × 555.12
  4. Step 4: Simplify right side
    2,015.80x = 1,678,516.34
  5. Step 5: Solve for x
    x = 1,678,516.34/2,015.80
  6. Step 6: Final answer
    x = 832.68

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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.