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Finding the Fourth Proportional to 2,859.41, 4,289.12 and 1,214.79

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Solution

The fourth proportional to 2,859.41, 4,289.12 and 1,214.79 is: 1,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.41 : 4,289.12 = 1,214.79 : x
  2. Step 2: Convert to fraction form
    2,859.41/4,289.12 = 1,214.79/x
  3. Step 3: Cross multiply
    2,859.41x = 4,289.12 × 1,214.79
  4. Step 4: Simplify right side
    2,859.41x = 5,210,374.01
  5. Step 5: Solve for x
    x = 5,210,374.01/2,859.41
  6. Step 6: Final answer
    x = 1,822.19

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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.