Home / 4,126.77-5,687.30-2,931.80

Finding the Fourth Proportional to 4,126.77, 5,687.30 and 2,931.80

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Solution

The fourth proportional to 4,126.77, 5,687.30 and 2,931.80 is: 4,040.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,126.77 : 5,687.30 = 2,931.80 : x
  2. Step 2: Convert to fraction form
    4,126.77/5,687.30 = 2,931.80/x
  3. Step 3: Cross multiply
    4,126.77x = 5,687.30 × 2,931.80
  4. Step 4: Simplify right side
    4,126.77x = 16,674,026.14
  5. Step 5: Solve for x
    x = 16,674,026.14/4,126.77
  6. Step 6: Final answer
    x = 4,040.45

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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.