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Finding the Fourth Proportional to 1,699, 2,548.14 and 1,376.20

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Solution

The fourth proportional to 1,699, 2,548.14 and 1,376.20 is: 2,064.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699 : 2,548.14 = 1,376.20 : x
  2. Step 2: Convert to fraction form
    1,699/2,548.14 = 1,376.20/x
  3. Step 3: Cross multiply
    1,699x = 2,548.14 × 1,376.20
  4. Step 4: Simplify right side
    1,699x = 3,506,750.27
  5. Step 5: Solve for x
    x = 3,506,750.27/1,699
  6. Step 6: Final answer
    x = 2,064.01

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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.