Home / 7,215.89-10,813.73-5,459.45

Finding the Fourth Proportional to 7,215.89, 10,813.73 and 5,459.45

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Solution

The fourth proportional to 7,215.89, 10,813.73 and 5,459.45 is: 8,181.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.89 : 10,813.73 = 5,459.45 : x
  2. Step 2: Convert to fraction form
    7,215.89/10,813.73 = 5,459.45/x
  3. Step 3: Cross multiply
    7,215.89x = 10,813.73 × 5,459.45
  4. Step 4: Simplify right side
    7,215.89x = 59,037,013.06
  5. Step 5: Solve for x
    x = 59,037,013.06/7,215.89
  6. Step 6: Final answer
    x = 8,181.53

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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.