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Finding the Fourth Proportional to 2,457.18, 3,684.51 and 813.13

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Solution

The fourth proportional to 2,457.18, 3,684.51 and 813.13 is: 1,219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.18 : 3,684.51 = 813.13 : x
  2. Step 2: Convert to fraction form
    2,457.18/3,684.51 = 813.13/x
  3. Step 3: Cross multiply
    2,457.18x = 3,684.51 × 813.13
  4. Step 4: Simplify right side
    2,457.18x = 2,995,985.62
  5. Step 5: Solve for x
    x = 2,995,985.62/2,457.18
  6. Step 6: Final answer
    x = 1,219.28

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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.