Home / 2,908.21-4,011.29-1,913.17

Finding the Fourth Proportional to 2,908.21, 4,011.29 and 1,913.17

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Solution

The fourth proportional to 2,908.21, 4,011.29 and 1,913.17 is: 2,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.21 : 4,011.29 = 1,913.17 : x
  2. Step 2: Convert to fraction form
    2,908.21/4,011.29 = 1,913.17/x
  3. Step 3: Cross multiply
    2,908.21x = 4,011.29 × 1,913.17
  4. Step 4: Simplify right side
    2,908.21x = 7,674,279.69
  5. Step 5: Solve for x
    x = 7,674,279.69/2,908.21
  6. Step 6: Final answer
    x = 2,638.83

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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.