Home / 3,918.45-5,875.95-1,836.78

Finding the Fourth Proportional to 3,918.45, 5,875.95 and 1,836.78

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Solution

The fourth proportional to 3,918.45, 5,875.95 and 1,836.78 is: 2,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.45 : 5,875.95 = 1,836.78 : x
  2. Step 2: Convert to fraction form
    3,918.45/5,875.95 = 1,836.78/x
  3. Step 3: Cross multiply
    3,918.45x = 5,875.95 × 1,836.78
  4. Step 4: Simplify right side
    3,918.45x = 10,792,798.52
  5. Step 5: Solve for x
    x = 10,792,798.52/3,918.45
  6. Step 6: Final answer
    x = 2,754.35

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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.