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Finding the Fourth Proportional to 8,928.90, 13,384.71 and 4,240.89

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Solution

The fourth proportional to 8,928.90, 13,384.71 and 4,240.89 is: 6,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.90 : 13,384.71 = 4,240.89 : x
  2. Step 2: Convert to fraction form
    8,928.90/13,384.71 = 4,240.89/x
  3. Step 3: Cross multiply
    8,928.90x = 13,384.71 × 4,240.89
  4. Step 4: Simplify right side
    8,928.90x = 56,763,082.79
  5. Step 5: Solve for x
    x = 56,763,082.79/8,928.90
  6. Step 6: Final answer
    x = 6,357.23

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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.