Home / 8,784.48-12,120.60-5,247

Finding the Fourth Proportional to 8,784.48, 12,120.60 and 5,247

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Solution

The fourth proportional to 8,784.48, 12,120.60 and 5,247 is: 7,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.48 : 12,120.60 = 5,247 : x
  2. Step 2: Convert to fraction form
    8,784.48/12,120.60 = 5,247/x
  3. Step 3: Cross multiply
    8,784.48x = 12,120.60 × 5,247
  4. Step 4: Simplify right side
    8,784.48x = 63,596,788.20
  5. Step 5: Solve for x
    x = 63,596,788.20/8,784.48
  6. Step 6: Final answer
    x = 7,239.68

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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.