Home / 3,011.81-4,155.80-1,685.48

Finding the Fourth Proportional to 3,011.81, 4,155.80 and 1,685.48

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Solution

The fourth proportional to 3,011.81, 4,155.80 and 1,685.48 is: 2,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.81 : 4,155.80 = 1,685.48 : x
  2. Step 2: Convert to fraction form
    3,011.81/4,155.80 = 1,685.48/x
  3. Step 3: Cross multiply
    3,011.81x = 4,155.80 × 1,685.48
  4. Step 4: Simplify right side
    3,011.81x = 7,004,488.58
  5. Step 5: Solve for x
    x = 7,004,488.58/3,011.81
  6. Step 6: Final answer
    x = 2,325.68

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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.