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Finding the Fourth Proportional to 2,756.81, 3,802.19 and 1,813.58

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Solution

The fourth proportional to 2,756.81, 3,802.19 and 1,813.58 is: 2,501.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.81 : 3,802.19 = 1,813.58 : x
  2. Step 2: Convert to fraction form
    2,756.81/3,802.19 = 1,813.58/x
  3. Step 3: Cross multiply
    2,756.81x = 3,802.19 × 1,813.58
  4. Step 4: Simplify right side
    2,756.81x = 6,895,561.26
  5. Step 5: Solve for x
    x = 6,895,561.26/2,756.81
  6. Step 6: Final answer
    x = 2,501.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.