Home / 4,641.12-6,400.08-2,779.20

Finding the Fourth Proportional to 4,641.12, 6,400.08 and 2,779.20

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Solution

The fourth proportional to 4,641.12, 6,400.08 and 2,779.20 is: 3,832.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,641.12 : 6,400.08 = 2,779.20 : x
  2. Step 2: Convert to fraction form
    4,641.12/6,400.08 = 2,779.20/x
  3. Step 3: Cross multiply
    4,641.12x = 6,400.08 × 2,779.20
  4. Step 4: Simplify right side
    4,641.12x = 17,787,102.34
  5. Step 5: Solve for x
    x = 17,787,102.34/4,641.12
  6. Step 6: Final answer
    x = 3,832.50

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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.