Home / 3,123.36-4,681.20-1,660.32

Finding the Fourth Proportional to 3,123.36, 4,681.20 and 1,660.32

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Solution

The fourth proportional to 3,123.36, 4,681.20 and 1,660.32 is: 2,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.36 : 4,681.20 = 1,660.32 : x
  2. Step 2: Convert to fraction form
    3,123.36/4,681.20 = 1,660.32/x
  3. Step 3: Cross multiply
    3,123.36x = 4,681.20 × 1,660.32
  4. Step 4: Simplify right side
    3,123.36x = 7,772,289.98
  5. Step 5: Solve for x
    x = 7,772,289.98/3,123.36
  6. Step 6: Final answer
    x = 2,488.44

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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.