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Finding the Fourth Proportional to 8,762.40, 13,145.58 and 4,078.98

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Solution

The fourth proportional to 8,762.40, 13,145.58 and 4,078.98 is: 6,119.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.40 : 13,145.58 = 4,078.98 : x
  2. Step 2: Convert to fraction form
    8,762.40/13,145.58 = 4,078.98/x
  3. Step 3: Cross multiply
    8,762.40x = 13,145.58 × 4,078.98
  4. Step 4: Simplify right side
    8,762.40x = 53,620,557.91
  5. Step 5: Solve for x
    x = 53,620,557.91/8,762.40
  6. Step 6: Final answer
    x = 6,119.39

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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.