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Finding the Fourth Proportional to 7,315.99, 10,975.74 and 2,385.64

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Solution

The fourth proportional to 7,315.99, 10,975.74 and 2,385.64 is: 3,579.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.99 : 10,975.74 = 2,385.64 : x
  2. Step 2: Convert to fraction form
    7,315.99/10,975.74 = 2,385.64/x
  3. Step 3: Cross multiply
    7,315.99x = 10,975.74 × 2,385.64
  4. Step 4: Simplify right side
    7,315.99x = 26,184,125.01
  5. Step 5: Solve for x
    x = 26,184,125.01/7,315.99
  6. Step 6: Final answer
    x = 3,579.03

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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.