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Finding the Fourth Proportional to 1,803.71, 2,489.24 and 1,140.53

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Solution

The fourth proportional to 1,803.71, 2,489.24 and 1,140.53 is: 1,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.71 : 2,489.24 = 1,140.53 : x
  2. Step 2: Convert to fraction form
    1,803.71/2,489.24 = 1,140.53/x
  3. Step 3: Cross multiply
    1,803.71x = 2,489.24 × 1,140.53
  4. Step 4: Simplify right side
    1,803.71x = 2,839,043.30
  5. Step 5: Solve for x
    x = 2,839,043.30/1,803.71
  6. Step 6: Final answer
    x = 1,574.00

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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.