Home / 7,315.31-10,973.27-2,121.19

Finding the Fourth Proportional to 7,315.31, 10,973.27 and 2,121.19

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Solution

The fourth proportional to 7,315.31, 10,973.27 and 2,121.19 is: 3,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.31 : 10,973.27 = 2,121.19 : x
  2. Step 2: Convert to fraction form
    7,315.31/10,973.27 = 2,121.19/x
  3. Step 3: Cross multiply
    7,315.31x = 10,973.27 × 2,121.19
  4. Step 4: Simplify right side
    7,315.31x = 23,276,368.46
  5. Step 5: Solve for x
    x = 23,276,368.46/7,315.31
  6. Step 6: Final answer
    x = 3,181.87

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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.