Home / 1,615.37-2,228.36-976.95

Finding the Fourth Proportional to 1,615.37, 2,228.36 and 976.95

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Solution

The fourth proportional to 1,615.37, 2,228.36 and 976.95 is: 1,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.37 : 2,228.36 = 976.95 : x
  2. Step 2: Convert to fraction form
    1,615.37/2,228.36 = 976.95/x
  3. Step 3: Cross multiply
    1,615.37x = 2,228.36 × 976.95
  4. Step 4: Simplify right side
    1,615.37x = 2,176,991.42
  5. Step 5: Solve for x
    x = 2,176,991.42/1,615.37
  6. Step 6: Final answer
    x = 1,347.68

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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.