Home / 1,666.15-2,295.36-1,381.50

Finding the Fourth Proportional to 1,666.15, 2,295.36 and 1,381.50

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Solution

The fourth proportional to 1,666.15, 2,295.36 and 1,381.50 is: 1,903.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.15 : 2,295.36 = 1,381.50 : x
  2. Step 2: Convert to fraction form
    1,666.15/2,295.36 = 1,381.50/x
  3. Step 3: Cross multiply
    1,666.15x = 2,295.36 × 1,381.50
  4. Step 4: Simplify right side
    1,666.15x = 3,171,039.84
  5. Step 5: Solve for x
    x = 3,171,039.84/1,666.15
  6. Step 6: Final answer
    x = 1,903.21

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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.