Home / 1,245.02-1,867.40-551.71

Finding the Fourth Proportional to 1,245.02, 1,867.40 and 551.71

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Solution

The fourth proportional to 1,245.02, 1,867.40 and 551.71 is: 827.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.02 : 1,867.40 = 551.71 : x
  2. Step 2: Convert to fraction form
    1,245.02/1,867.40 = 551.71/x
  3. Step 3: Cross multiply
    1,245.02x = 1,867.40 × 551.71
  4. Step 4: Simplify right side
    1,245.02x = 1,030,268.00
  5. Step 5: Solve for x
    x = 1,030,268.00/1,245.02
  6. Step 6: Final answer
    x = 827.51

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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.