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Finding the Fourth Proportional to 5,563.72, 8,345.90 and 1,865.63

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Solution

The fourth proportional to 5,563.72, 8,345.90 and 1,865.63 is: 2,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,563.72 : 8,345.90 = 1,865.63 : x
  2. Step 2: Convert to fraction form
    5,563.72/8,345.90 = 1,865.63/x
  3. Step 3: Cross multiply
    5,563.72x = 8,345.90 × 1,865.63
  4. Step 4: Simplify right side
    5,563.72x = 15,570,386.95
  5. Step 5: Solve for x
    x = 15,570,386.95/5,563.72
  6. Step 6: Final answer
    x = 2,798.56

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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.