Home / 5,135.60-7,702.20-1,670.96

Finding the Fourth Proportional to 5,135.60, 7,702.20 and 1,670.96

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Solution

The fourth proportional to 5,135.60, 7,702.20 and 1,670.96 is: 2,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.60 : 7,702.20 = 1,670.96 : x
  2. Step 2: Convert to fraction form
    5,135.60/7,702.20 = 1,670.96/x
  3. Step 3: Cross multiply
    5,135.60x = 7,702.20 × 1,670.96
  4. Step 4: Simplify right side
    5,135.60x = 12,870,068.11
  5. Step 5: Solve for x
    x = 12,870,068.11/5,135.60
  6. Step 6: Final answer
    x = 2,506.05

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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.