Home / 5,539.10-7,638.72-4,278.16

Finding the Fourth Proportional to 5,539.10, 7,638.72 and 4,278.16

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Solution

The fourth proportional to 5,539.10, 7,638.72 and 4,278.16 is: 5,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,539.10 : 7,638.72 = 4,278.16 : x
  2. Step 2: Convert to fraction form
    5,539.10/7,638.72 = 4,278.16/x
  3. Step 3: Cross multiply
    5,539.10x = 7,638.72 × 4,278.16
  4. Step 4: Simplify right side
    5,539.10x = 32,679,666.36
  5. Step 5: Solve for x
    x = 32,679,666.36/5,539.10
  6. Step 6: Final answer
    x = 5,899.82

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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.