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Finding the Fourth Proportional to 2,836.51, 4,255.71 and 988.09

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Solution

The fourth proportional to 2,836.51, 4,255.71 and 988.09 is: 1,482.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.51 : 4,255.71 = 988.09 : x
  2. Step 2: Convert to fraction form
    2,836.51/4,255.71 = 988.09/x
  3. Step 3: Cross multiply
    2,836.51x = 4,255.71 × 988.09
  4. Step 4: Simplify right side
    2,836.51x = 4,205,024.49
  5. Step 5: Solve for x
    x = 4,205,024.49/2,836.51
  6. Step 6: Final answer
    x = 1,482.46

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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.