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Finding the Fourth Proportional to 1,461.80, 2,015.19 and 901.89

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Solution

The fourth proportional to 1,461.80, 2,015.19 and 901.89 is: 1,243.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.80 : 2,015.19 = 901.89 : x
  2. Step 2: Convert to fraction form
    1,461.80/2,015.19 = 901.89/x
  3. Step 3: Cross multiply
    1,461.80x = 2,015.19 × 901.89
  4. Step 4: Simplify right side
    1,461.80x = 1,817,475.20
  5. Step 5: Solve for x
    x = 1,817,475.20/1,461.80
  6. Step 6: Final answer
    x = 1,243.31

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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.