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Finding the Fourth Proportional to 7,259.58, 10,018.15 and 3,947.58

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Solution

The fourth proportional to 7,259.58, 10,018.15 and 3,947.58 is: 5,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,259.58 : 10,018.15 = 3,947.58 : x
  2. Step 2: Convert to fraction form
    7,259.58/10,018.15 = 3,947.58/x
  3. Step 3: Cross multiply
    7,259.58x = 10,018.15 × 3,947.58
  4. Step 4: Simplify right side
    7,259.58x = 39,547,448.58
  5. Step 5: Solve for x
    x = 39,547,448.58/7,259.58
  6. Step 6: Final answer
    x = 5,447.62

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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.