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Finding the Fourth Proportional to 1,964.10, 2,710.50 and 1,079.99

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Solution

The fourth proportional to 1,964.10, 2,710.50 and 1,079.99 is: 1,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.10 : 2,710.50 = 1,079.99 : x
  2. Step 2: Convert to fraction form
    1,964.10/2,710.50 = 1,079.99/x
  3. Step 3: Cross multiply
    1,964.10x = 2,710.50 × 1,079.99
  4. Step 4: Simplify right side
    1,964.10x = 2,927,299.34
  5. Step 5: Solve for x
    x = 2,927,299.34/1,964.10
  6. Step 6: Final answer
    x = 1,490.40

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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.