Home / 5,637.61-7,779.78-3,119.72

Finding the Fourth Proportional to 5,637.61, 7,779.78 and 3,119.72

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Solution

The fourth proportional to 5,637.61, 7,779.78 and 3,119.72 is: 4,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,637.61 : 7,779.78 = 3,119.72 : x
  2. Step 2: Convert to fraction form
    5,637.61/7,779.78 = 3,119.72/x
  3. Step 3: Cross multiply
    5,637.61x = 7,779.78 × 3,119.72
  4. Step 4: Simplify right side
    5,637.61x = 24,270,718.75
  5. Step 5: Solve for x
    x = 24,270,718.75/5,637.61
  6. Step 6: Final answer
    x = 4,305.14

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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.