Home / 3,178.39-4,386.21-1,852.90

Finding the Fourth Proportional to 3,178.39, 4,386.21 and 1,852.90

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Solution

The fourth proportional to 3,178.39, 4,386.21 and 1,852.90 is: 2,557.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.39 : 4,386.21 = 1,852.90 : x
  2. Step 2: Convert to fraction form
    3,178.39/4,386.21 = 1,852.90/x
  3. Step 3: Cross multiply
    3,178.39x = 4,386.21 × 1,852.90
  4. Step 4: Simplify right side
    3,178.39x = 8,127,208.51
  5. Step 5: Solve for x
    x = 8,127,208.51/3,178.39
  6. Step 6: Final answer
    x = 2,557.02

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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.