Home / 3,478.01-4,799.16-1,985.58

Finding the Fourth Proportional to 3,478.01, 4,799.16 and 1,985.58

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Solution

The fourth proportional to 3,478.01, 4,799.16 and 1,985.58 is: 2,739.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.01 : 4,799.16 = 1,985.58 : x
  2. Step 2: Convert to fraction form
    3,478.01/4,799.16 = 1,985.58/x
  3. Step 3: Cross multiply
    3,478.01x = 4,799.16 × 1,985.58
  4. Step 4: Simplify right side
    3,478.01x = 9,529,116.11
  5. Step 5: Solve for x
    x = 9,529,116.11/3,478.01
  6. Step 6: Final answer
    x = 2,739.82

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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.