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Finding the Fourth Proportional to 9,509.79, 14,270.90 and 4,315.71

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Solution

The fourth proportional to 9,509.79, 14,270.90 and 4,315.71 is: 6,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,509.79 : 14,270.90 = 4,315.71 : x
  2. Step 2: Convert to fraction form
    9,509.79/14,270.90 = 4,315.71/x
  3. Step 3: Cross multiply
    9,509.79x = 14,270.90 × 4,315.71
  4. Step 4: Simplify right side
    9,509.79x = 61,589,065.84
  5. Step 5: Solve for x
    x = 61,589,065.84/9,509.79
  6. Step 6: Final answer
    x = 6,476.39

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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.