Home / 8,640.99-11,924.84-4,915.23

Finding the Fourth Proportional to 8,640.99, 11,924.84 and 4,915.23

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Solution

The fourth proportional to 8,640.99, 11,924.84 and 4,915.23 is: 6,783.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.99 : 11,924.84 = 4,915.23 : x
  2. Step 2: Convert to fraction form
    8,640.99/11,924.84 = 4,915.23/x
  3. Step 3: Cross multiply
    8,640.99x = 11,924.84 × 4,915.23
  4. Step 4: Simplify right side
    8,640.99x = 58,613,306.74
  5. Step 5: Solve for x
    x = 58,613,306.74/8,640.99
  6. Step 6: Final answer
    x = 6,783.17

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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.