Home / 1,386.02-2,079.38-461.57

Finding the Fourth Proportional to 1,386.02, 2,079.38 and 461.57

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Solution

The fourth proportional to 1,386.02, 2,079.38 and 461.57 is: 692.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.02 : 2,079.38 = 461.57 : x
  2. Step 2: Convert to fraction form
    1,386.02/2,079.38 = 461.57/x
  3. Step 3: Cross multiply
    1,386.02x = 2,079.38 × 461.57
  4. Step 4: Simplify right side
    1,386.02x = 959,770.18
  5. Step 5: Solve for x
    x = 959,770.18/1,386.02
  6. Step 6: Final answer
    x = 692.46

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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.