Home / 1,702.21-2,347.96-1,230.80

Finding the Fourth Proportional to 1,702.21, 2,347.96 and 1,230.80

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Solution

The fourth proportional to 1,702.21, 2,347.96 and 1,230.80 is: 1,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.21 : 2,347.96 = 1,230.80 : x
  2. Step 2: Convert to fraction form
    1,702.21/2,347.96 = 1,230.80/x
  3. Step 3: Cross multiply
    1,702.21x = 2,347.96 × 1,230.80
  4. Step 4: Simplify right side
    1,702.21x = 2,889,869.17
  5. Step 5: Solve for x
    x = 2,889,869.17/1,702.21
  6. Step 6: Final answer
    x = 1,697.72

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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.