Home / 5,315.91-7,973.23-1,420.62

Finding the Fourth Proportional to 5,315.91, 7,973.23 and 1,420.62

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Solution

The fourth proportional to 5,315.91, 7,973.23 and 1,420.62 is: 2,130.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.91 : 7,973.23 = 1,420.62 : x
  2. Step 2: Convert to fraction form
    5,315.91/7,973.23 = 1,420.62/x
  3. Step 3: Cross multiply
    5,315.91x = 7,973.23 × 1,420.62
  4. Step 4: Simplify right side
    5,315.91x = 11,326,930.00
  5. Step 5: Solve for x
    x = 11,326,930.00/5,315.91
  6. Step 6: Final answer
    x = 2,130.76

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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.