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Finding the Fourth Proportional to 7,144.79, 9,860.16 and 4,312.12

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Solution

The fourth proportional to 7,144.79, 9,860.16 and 4,312.12 is: 5,950.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.79 : 9,860.16 = 4,312.12 : x
  2. Step 2: Convert to fraction form
    7,144.79/9,860.16 = 4,312.12/x
  3. Step 3: Cross multiply
    7,144.79x = 9,860.16 × 4,312.12
  4. Step 4: Simplify right side
    7,144.79x = 42,518,143.84
  5. Step 5: Solve for x
    x = 42,518,143.84/7,144.79
  6. Step 6: Final answer
    x = 5,950.93

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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.