Home / 3,459.72-5,177.40-2,978.58

Finding the Fourth Proportional to 3,459.72, 5,177.40 and 2,978.58

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Solution

The fourth proportional to 3,459.72, 5,177.40 and 2,978.58 is: 4,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.72 : 5,177.40 = 2,978.58 : x
  2. Step 2: Convert to fraction form
    3,459.72/5,177.40 = 2,978.58/x
  3. Step 3: Cross multiply
    3,459.72x = 5,177.40 × 2,978.58
  4. Step 4: Simplify right side
    3,459.72x = 15,421,300.09
  5. Step 5: Solve for x
    x = 15,421,300.09/3,459.72
  6. Step 6: Final answer
    x = 4,457.38

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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.