Home / 3,011.40-4,155.98-1,685.36

Finding the Fourth Proportional to 3,011.40, 4,155.98 and 1,685.36

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Solution

The fourth proportional to 3,011.40, 4,155.98 and 1,685.36 is: 2,325.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.40 : 4,155.98 = 1,685.36 : x
  2. Step 2: Convert to fraction form
    3,011.40/4,155.98 = 1,685.36/x
  3. Step 3: Cross multiply
    3,011.40x = 4,155.98 × 1,685.36
  4. Step 4: Simplify right side
    3,011.40x = 7,004,315.26
  5. Step 5: Solve for x
    x = 7,004,315.26/3,011.40
  6. Step 6: Final answer
    x = 2,325.94

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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.