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Finding the Fourth Proportional to 4,689.54, 7,039.17 and 4,339.62

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Solution

The fourth proportional to 4,689.54, 7,039.17 and 4,339.62 is: 6,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.54 : 7,039.17 = 4,339.62 : x
  2. Step 2: Convert to fraction form
    4,689.54/7,039.17 = 4,339.62/x
  3. Step 3: Cross multiply
    4,689.54x = 7,039.17 × 4,339.62
  4. Step 4: Simplify right side
    4,689.54x = 30,547,322.92
  5. Step 5: Solve for x
    x = 30,547,322.92/4,689.54
  6. Step 6: Final answer
    x = 6,513.93

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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.