Home / 3,655.15-5,487.80-1,877.45

Finding the Fourth Proportional to 3,655.15, 5,487.80 and 1,877.45

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Solution

The fourth proportional to 3,655.15, 5,487.80 and 1,877.45 is: 2,818.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.15 : 5,487.80 = 1,877.45 : x
  2. Step 2: Convert to fraction form
    3,655.15/5,487.80 = 1,877.45/x
  3. Step 3: Cross multiply
    3,655.15x = 5,487.80 × 1,877.45
  4. Step 4: Simplify right side
    3,655.15x = 10,303,033.28
  5. Step 5: Solve for x
    x = 10,303,033.28/3,655.15
  6. Step 6: Final answer
    x = 2,818.77

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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.