Home / 1,865.21-2,798.06-615.93

Finding the Fourth Proportional to 1,865.21, 2,798.06 and 615.93

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Solution

The fourth proportional to 1,865.21, 2,798.06 and 615.93 is: 923.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.21 : 2,798.06 = 615.93 : x
  2. Step 2: Convert to fraction form
    1,865.21/2,798.06 = 615.93/x
  3. Step 3: Cross multiply
    1,865.21x = 2,798.06 × 615.93
  4. Step 4: Simplify right side
    1,865.21x = 1,723,419.13
  5. Step 5: Solve for x
    x = 1,723,419.13/1,865.21
  6. Step 6: Final answer
    x = 923.98

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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.