Home / 3,178.70-4,386.72-1,852.19

Finding the Fourth Proportional to 3,178.70, 4,386.72 and 1,852.19

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Solution

The fourth proportional to 3,178.70, 4,386.72 and 1,852.19 is: 2,556.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.70 : 4,386.72 = 1,852.19 : x
  2. Step 2: Convert to fraction form
    3,178.70/4,386.72 = 1,852.19/x
  3. Step 3: Cross multiply
    3,178.70x = 4,386.72 × 1,852.19
  4. Step 4: Simplify right side
    3,178.70x = 8,125,038.92
  5. Step 5: Solve for x
    x = 8,125,038.92/3,178.70
  6. Step 6: Final answer
    x = 2,556.09

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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.