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Finding the Fourth Proportional to 9,919.68, 14,880.74 and 4,374.42

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Solution

The fourth proportional to 9,919.68, 14,880.74 and 4,374.42 is: 6,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.68 : 14,880.74 = 4,374.42 : x
  2. Step 2: Convert to fraction form
    9,919.68/14,880.74 = 4,374.42/x
  3. Step 3: Cross multiply
    9,919.68x = 14,880.74 × 4,374.42
  4. Step 4: Simplify right side
    9,919.68x = 65,094,606.67
  5. Step 5: Solve for x
    x = 65,094,606.67/9,919.68
  6. Step 6: Final answer
    x = 6,562.17

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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.