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Finding the Fourth Proportional to 6,859.63, 9,457.68 and 5,599.40

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Solution

The fourth proportional to 6,859.63, 9,457.68 and 5,599.40 is: 7,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,859.63 : 9,457.68 = 5,599.40 : x
  2. Step 2: Convert to fraction form
    6,859.63/9,457.68 = 5,599.40/x
  3. Step 3: Cross multiply
    6,859.63x = 9,457.68 × 5,599.40
  4. Step 4: Simplify right side
    6,859.63x = 52,957,357.04
  5. Step 5: Solve for x
    x = 52,957,357.04/6,859.63
  6. Step 6: Final answer
    x = 7,720.15

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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.