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Finding the Fourth Proportional to 2,108.33, 3,162.49 and 647.49

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Solution

The fourth proportional to 2,108.33, 3,162.49 and 647.49 is: 971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.33 : 3,162.49 = 647.49 : x
  2. Step 2: Convert to fraction form
    2,108.33/3,162.49 = 647.49/x
  3. Step 3: Cross multiply
    2,108.33x = 3,162.49 × 647.49
  4. Step 4: Simplify right side
    2,108.33x = 2,047,677.41
  5. Step 5: Solve for x
    x = 2,047,677.41/2,108.33
  6. Step 6: Final answer
    x = 971.23

Related Problems

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Double scale
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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.