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Finding the Fourth Proportional to 2,859.70, 4,289.55 and 1,563.70

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Solution

The fourth proportional to 2,859.70, 4,289.55 and 1,563.70 is: 2,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.70 : 4,289.55 = 1,563.70 : x
  2. Step 2: Convert to fraction form
    2,859.70/4,289.55 = 1,563.70/x
  3. Step 3: Cross multiply
    2,859.70x = 4,289.55 × 1,563.70
  4. Step 4: Simplify right side
    2,859.70x = 6,707,569.34
  5. Step 5: Solve for x
    x = 6,707,569.34/2,859.70
  6. Step 6: Final answer
    x = 2,345.55

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Similar ratio
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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.