Home / 8,905.24-12,290.69-5,127.77

Finding the Fourth Proportional to 8,905.24, 12,290.69 and 5,127.77

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Solution

The fourth proportional to 8,905.24, 12,290.69 and 5,127.77 is: 7,077.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.24 : 12,290.69 = 5,127.77 : x
  2. Step 2: Convert to fraction form
    8,905.24/12,290.69 = 5,127.77/x
  3. Step 3: Cross multiply
    8,905.24x = 12,290.69 × 5,127.77
  4. Step 4: Simplify right side
    8,905.24x = 63,023,823.12
  5. Step 5: Solve for x
    x = 63,023,823.12/8,905.24
  6. Step 6: Final answer
    x = 7,077.16

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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.