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Finding the Fourth Proportional to 4,218.99, 5,779.98 and 4,061.28

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Solution

The fourth proportional to 4,218.99, 5,779.98 and 4,061.28 is: 5,563.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.99 : 5,779.98 = 4,061.28 : x
  2. Step 2: Convert to fraction form
    4,218.99/5,779.98 = 4,061.28/x
  3. Step 3: Cross multiply
    4,218.99x = 5,779.98 × 4,061.28
  4. Step 4: Simplify right side
    4,218.99x = 23,474,117.17
  5. Step 5: Solve for x
    x = 23,474,117.17/4,218.99
  6. Step 6: Final answer
    x = 5,563.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.