Home / 2,117.38-2,921.18-1,330.06

Finding the Fourth Proportional to 2,117.38, 2,921.18 and 1,330.06

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Solution

The fourth proportional to 2,117.38, 2,921.18 and 1,330.06 is: 1,834.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.38 : 2,921.18 = 1,330.06 : x
  2. Step 2: Convert to fraction form
    2,117.38/2,921.18 = 1,330.06/x
  3. Step 3: Cross multiply
    2,117.38x = 2,921.18 × 1,330.06
  4. Step 4: Simplify right side
    2,117.38x = 3,885,344.67
  5. Step 5: Solve for x
    x = 3,885,344.67/2,117.38
  6. Step 6: Final answer
    x = 1,834.98

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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.