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Finding the Fourth Proportional to 1,875.10, 2,813.28 and 901.28

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Solution

The fourth proportional to 1,875.10, 2,813.28 and 901.28 is: 1,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.10 : 2,813.28 = 901.28 : x
  2. Step 2: Convert to fraction form
    1,875.10/2,813.28 = 901.28/x
  3. Step 3: Cross multiply
    1,875.10x = 2,813.28 × 901.28
  4. Step 4: Simplify right side
    1,875.10x = 2,535,553.00
  5. Step 5: Solve for x
    x = 2,535,553.00/1,875.10
  6. Step 6: Final answer
    x = 1,352.22

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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.