Home / 8,905.23-12,285.77-5,717.68

Finding the Fourth Proportional to 8,905.23, 12,285.77 and 5,717.68

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Solution

The fourth proportional to 8,905.23, 12,285.77 and 5,717.68 is: 7,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.23 : 12,285.77 = 5,717.68 : x
  2. Step 2: Convert to fraction form
    8,905.23/12,285.77 = 5,717.68/x
  3. Step 3: Cross multiply
    8,905.23x = 12,285.77 × 5,717.68
  4. Step 4: Simplify right side
    8,905.23x = 70,246,101.41
  5. Step 5: Solve for x
    x = 70,246,101.41/8,905.23
  6. Step 6: Final answer
    x = 7,888.18

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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.