Home / 1,617.36-2,231.60-953.76

Finding the Fourth Proportional to 1,617.36, 2,231.60 and 953.76

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Solution

The fourth proportional to 1,617.36, 2,231.60 and 953.76 is: 1,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.36 : 2,231.60 = 953.76 : x
  2. Step 2: Convert to fraction form
    1,617.36/2,231.60 = 953.76/x
  3. Step 3: Cross multiply
    1,617.36x = 2,231.60 × 953.76
  4. Step 4: Simplify right side
    1,617.36x = 2,128,410.82
  5. Step 5: Solve for x
    x = 2,128,410.82/1,617.36
  6. Step 6: Final answer
    x = 1,315.98

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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.