Home / 3,657.19-5,046.93-1,978.59

Finding the Fourth Proportional to 3,657.19, 5,046.93 and 1,978.59

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Solution

The fourth proportional to 3,657.19, 5,046.93 and 1,978.59 is: 2,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.19 : 5,046.93 = 1,978.59 : x
  2. Step 2: Convert to fraction form
    3,657.19/5,046.93 = 1,978.59/x
  3. Step 3: Cross multiply
    3,657.19x = 5,046.93 × 1,978.59
  4. Step 4: Simplify right side
    3,657.19x = 9,985,795.34
  5. Step 5: Solve for x
    x = 9,985,795.34/3,657.19
  6. Step 6: Final answer
    x = 2,730.46

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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.