Home / 8,782.48-12,121.32-5,058.64

Finding the Fourth Proportional to 8,782.48, 12,121.32 and 5,058.64

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Solution

The fourth proportional to 8,782.48, 12,121.32 and 5,058.64 is: 6,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.48 : 12,121.32 = 5,058.64 : x
  2. Step 2: Convert to fraction form
    8,782.48/12,121.32 = 5,058.64/x
  3. Step 3: Cross multiply
    8,782.48x = 12,121.32 × 5,058.64
  4. Step 4: Simplify right side
    8,782.48x = 61,317,394.20
  5. Step 5: Solve for x
    x = 61,317,394.20/8,782.48
  6. Step 6: Final answer
    x = 6,981.79

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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.