Home / 1,635.21-2,257.02-972.51

Finding the Fourth Proportional to 1,635.21, 2,257.02 and 972.51

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Solution

The fourth proportional to 1,635.21, 2,257.02 and 972.51 is: 1,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.21 : 2,257.02 = 972.51 : x
  2. Step 2: Convert to fraction form
    1,635.21/2,257.02 = 972.51/x
  3. Step 3: Cross multiply
    1,635.21x = 2,257.02 × 972.51
  4. Step 4: Simplify right side
    1,635.21x = 2,194,974.52
  5. Step 5: Solve for x
    x = 2,194,974.52/1,635.21
  6. Step 6: Final answer
    x = 1,342.32

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1.5x scale

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.