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Finding the Fourth Proportional to 5,789.99, 8,684.91 and 1,407.45

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Solution

The fourth proportional to 5,789.99, 8,684.91 and 1,407.45 is: 2,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.99 : 8,684.91 = 1,407.45 : x
  2. Step 2: Convert to fraction form
    5,789.99/8,684.91 = 1,407.45/x
  3. Step 3: Cross multiply
    5,789.99x = 8,684.91 × 1,407.45
  4. Step 4: Simplify right side
    5,789.99x = 12,223,576.58
  5. Step 5: Solve for x
    x = 12,223,576.58/5,789.99
  6. Step 6: Final answer
    x = 2,111.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.