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Finding the Fourth Proportional to 2,008.57, 3,011.73 and 621.51

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Solution

The fourth proportional to 2,008.57, 3,011.73 and 621.51 is: 931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.57 : 3,011.73 = 621.51 : x
  2. Step 2: Convert to fraction form
    2,008.57/3,011.73 = 621.51/x
  3. Step 3: Cross multiply
    2,008.57x = 3,011.73 × 621.51
  4. Step 4: Simplify right side
    2,008.57x = 1,871,820.31
  5. Step 5: Solve for x
    x = 1,871,820.31/2,008.57
  6. Step 6: Final answer
    x = 931.92

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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.