Home / 5,186.31-7,780.24-1,898.62

Finding the Fourth Proportional to 5,186.31, 7,780.24 and 1,898.62

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Solution

The fourth proportional to 5,186.31, 7,780.24 and 1,898.62 is: 2,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.31 : 7,780.24 = 1,898.62 : x
  2. Step 2: Convert to fraction form
    5,186.31/7,780.24 = 1,898.62/x
  3. Step 3: Cross multiply
    5,186.31x = 7,780.24 × 1,898.62
  4. Step 4: Simplify right side
    5,186.31x = 14,771,702.19
  5. Step 5: Solve for x
    x = 14,771,702.19/5,186.31
  6. Step 6: Final answer
    x = 2,848.21

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1.5x scale

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.