Home / 1,699.20-2,347.17-1,368.90

Finding the Fourth Proportional to 1,699.20, 2,347.17 and 1,368.90

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Solution

The fourth proportional to 1,699.20, 2,347.17 and 1,368.90 is: 1,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.20 : 2,347.17 = 1,368.90 : x
  2. Step 2: Convert to fraction form
    1,699.20/2,347.17 = 1,368.90/x
  3. Step 3: Cross multiply
    1,699.20x = 2,347.17 × 1,368.90
  4. Step 4: Simplify right side
    1,699.20x = 3,213,041.01
  5. Step 5: Solve for x
    x = 3,213,041.01/1,699.20
  6. Step 6: Final answer
    x = 1,890.91

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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.