Home / 8,280.54-12,421.62-3,085.20

Finding the Fourth Proportional to 8,280.54, 12,421.62 and 3,085.20

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Solution

The fourth proportional to 8,280.54, 12,421.62 and 3,085.20 is: 4,628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.54 : 12,421.62 = 3,085.20 : x
  2. Step 2: Convert to fraction form
    8,280.54/12,421.62 = 3,085.20/x
  3. Step 3: Cross multiply
    8,280.54x = 12,421.62 × 3,085.20
  4. Step 4: Simplify right side
    8,280.54x = 38,323,182.02
  5. Step 5: Solve for x
    x = 38,323,182.02/8,280.54
  6. Step 6: Final answer
    x = 4,628.10

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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.