Home / 9,315.72-13,976.64-3,075.90

Finding the Fourth Proportional to 9,315.72, 13,976.64 and 3,075.90

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Solution

The fourth proportional to 9,315.72, 13,976.64 and 3,075.90 is: 4,614.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.72 : 13,976.64 = 3,075.90 : x
  2. Step 2: Convert to fraction form
    9,315.72/13,976.64 = 3,075.90/x
  3. Step 3: Cross multiply
    9,315.72x = 13,976.64 × 3,075.90
  4. Step 4: Simplify right side
    9,315.72x = 42,990,746.98
  5. Step 5: Solve for x
    x = 42,990,746.98/9,315.72
  6. Step 6: Final answer
    x = 4,614.86

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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.