Home / 2,011.35-3,018.06-915.57

Finding the Fourth Proportional to 2,011.35, 3,018.06 and 915.57

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Solution

The fourth proportional to 2,011.35, 3,018.06 and 915.57 is: 1,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.35 : 3,018.06 = 915.57 : x
  2. Step 2: Convert to fraction form
    2,011.35/3,018.06 = 915.57/x
  3. Step 3: Cross multiply
    2,011.35x = 3,018.06 × 915.57
  4. Step 4: Simplify right side
    2,011.35x = 2,763,245.19
  5. Step 5: Solve for x
    x = 2,763,245.19/2,011.35
  6. Step 6: Final answer
    x = 1,373.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.