Home / 1,237.55-1,857.47-621.95

Finding the Fourth Proportional to 1,237.55, 1,857.47 and 621.95

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Solution

The fourth proportional to 1,237.55, 1,857.47 and 621.95 is: 933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.55 : 1,857.47 = 621.95 : x
  2. Step 2: Convert to fraction form
    1,237.55/1,857.47 = 621.95/x
  3. Step 3: Cross multiply
    1,237.55x = 1,857.47 × 621.95
  4. Step 4: Simplify right side
    1,237.55x = 1,155,241.07
  5. Step 5: Solve for x
    x = 1,155,241.07/1,237.55
  6. Step 6: Final answer
    x = 933.49

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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.