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Finding the Fourth Proportional to 1,885.59, 2,829.02 and 911.57

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Solution

The fourth proportional to 1,885.59, 2,829.02 and 911.57 is: 1,367.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.59 : 2,829.02 = 911.57 : x
  2. Step 2: Convert to fraction form
    1,885.59/2,829.02 = 911.57/x
  3. Step 3: Cross multiply
    1,885.59x = 2,829.02 × 911.57
  4. Step 4: Simplify right side
    1,885.59x = 2,578,831.06
  5. Step 5: Solve for x
    x = 2,578,831.06/1,885.59
  6. Step 6: Final answer
    x = 1,367.65

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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.