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Finding the Fourth Proportional to 1,797.20, 2,480 and 1,011.08

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Solution

The fourth proportional to 1,797.20, 2,480 and 1,011.08 is: 1,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797.20 : 2,480 = 1,011.08 : x
  2. Step 2: Convert to fraction form
    1,797.20/2,480 = 1,011.08/x
  3. Step 3: Cross multiply
    1,797.20x = 2,480 × 1,011.08
  4. Step 4: Simplify right side
    1,797.20x = 2,507,478.40
  5. Step 5: Solve for x
    x = 2,507,478.40/1,797.20
  6. Step 6: Final answer
    x = 1,395.21

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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.