Home / 8,790.86-12,131.45-4,812.00

Finding the Fourth Proportional to 8,790.86, 12,131.45 and 4,812.00

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Solution

The fourth proportional to 8,790.86, 12,131.45 and 4,812.00 is: 6,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.86 : 12,131.45 = 4,812.00 : x
  2. Step 2: Convert to fraction form
    8,790.86/12,131.45 = 4,812.00/x
  3. Step 3: Cross multiply
    8,790.86x = 12,131.45 × 4,812.00
  4. Step 4: Simplify right side
    8,790.86x = 58,376,579.76
  5. Step 5: Solve for x
    x = 58,376,579.76/8,790.86
  6. Step 6: Final answer
    x = 6,640.60

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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.