Home / 3,135.80-4,703.70-1,903.57

Finding the Fourth Proportional to 3,135.80, 4,703.70 and 1,903.57

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Solution

The fourth proportional to 3,135.80, 4,703.70 and 1,903.57 is: 2,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.80 : 4,703.70 = 1,903.57 : x
  2. Step 2: Convert to fraction form
    3,135.80/4,703.70 = 1,903.57/x
  3. Step 3: Cross multiply
    3,135.80x = 4,703.70 × 1,903.57
  4. Step 4: Simplify right side
    3,135.80x = 8,953,798.69
  5. Step 5: Solve for x
    x = 8,953,798.69/3,135.80
  6. Step 6: Final answer
    x = 2,855.35

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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.