Home / 4,905.12-7,358.60-1,985.48

Finding the Fourth Proportional to 4,905.12, 7,358.60 and 1,985.48

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Solution

The fourth proportional to 4,905.12, 7,358.60 and 1,985.48 is: 2,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.12 : 7,358.60 = 1,985.48 : x
  2. Step 2: Convert to fraction form
    4,905.12/7,358.60 = 1,985.48/x
  3. Step 3: Cross multiply
    4,905.12x = 7,358.60 × 1,985.48
  4. Step 4: Simplify right side
    4,905.12x = 14,610,353.13
  5. Step 5: Solve for x
    x = 14,610,353.13/4,905.12
  6. Step 6: Final answer
    x = 2,978.59

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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.