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Finding the Fourth Proportional to 8,699, 12,004.54 and 4,720.24

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Solution

The fourth proportional to 8,699, 12,004.54 and 4,720.24 is: 6,513.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699 : 12,004.54 = 4,720.24 : x
  2. Step 2: Convert to fraction form
    8,699/12,004.54 = 4,720.24/x
  3. Step 3: Cross multiply
    8,699x = 12,004.54 × 4,720.24
  4. Step 4: Simplify right side
    8,699x = 56,664,309.89
  5. Step 5: Solve for x
    x = 56,664,309.89/8,699
  6. Step 6: Final answer
    x = 6,513.89

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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.