Home / 8,345.16-12,515.78-2,420.48

Finding the Fourth Proportional to 8,345.16, 12,515.78 and 2,420.48

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Solution

The fourth proportional to 8,345.16, 12,515.78 and 2,420.48 is: 3,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.16 : 12,515.78 = 2,420.48 : x
  2. Step 2: Convert to fraction form
    8,345.16/12,515.78 = 2,420.48/x
  3. Step 3: Cross multiply
    8,345.16x = 12,515.78 × 2,420.48
  4. Step 4: Simplify right side
    8,345.16x = 30,294,232.52
  5. Step 5: Solve for x
    x = 30,294,232.52/8,345.16
  6. Step 6: Final answer
    x = 3,630.16

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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.