Home / 5,490.36-7,569.90-4,779.54

Finding the Fourth Proportional to 5,490.36, 7,569.90 and 4,779.54

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Solution

The fourth proportional to 5,490.36, 7,569.90 and 4,779.54 is: 6,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.36 : 7,569.90 = 4,779.54 : x
  2. Step 2: Convert to fraction form
    5,490.36/7,569.90 = 4,779.54/x
  3. Step 3: Cross multiply
    5,490.36x = 7,569.90 × 4,779.54
  4. Step 4: Simplify right side
    5,490.36x = 36,180,639.85
  5. Step 5: Solve for x
    x = 36,180,639.85/5,490.36
  6. Step 6: Final answer
    x = 6,589.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.