Home / 3,117.95-4,302.77-1,939.01

Finding the Fourth Proportional to 3,117.95, 4,302.77 and 1,939.01

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Solution

The fourth proportional to 3,117.95, 4,302.77 and 1,939.01 is: 2,675.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.95 : 4,302.77 = 1,939.01 : x
  2. Step 2: Convert to fraction form
    3,117.95/4,302.77 = 1,939.01/x
  3. Step 3: Cross multiply
    3,117.95x = 4,302.77 × 1,939.01
  4. Step 4: Simplify right side
    3,117.95x = 8,343,082.85
  5. Step 5: Solve for x
    x = 8,343,082.85/3,117.95
  6. Step 6: Final answer
    x = 2,675.83

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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.