Home / 7,315.90-10,095.84-4,172.14

Finding the Fourth Proportional to 7,315.90, 10,095.84 and 4,172.14

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Solution

The fourth proportional to 7,315.90, 10,095.84 and 4,172.14 is: 5,757.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.90 : 10,095.84 = 4,172.14 : x
  2. Step 2: Convert to fraction form
    7,315.90/10,095.84 = 4,172.14/x
  3. Step 3: Cross multiply
    7,315.90x = 10,095.84 × 4,172.14
  4. Step 4: Simplify right side
    7,315.90x = 42,121,257.90
  5. Step 5: Solve for x
    x = 42,121,257.90/7,315.90
  6. Step 6: Final answer
    x = 5,757.50

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1.5x scale

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.