Home / 3,011.84-4,156.40-1,685.70

Finding the Fourth Proportional to 3,011.84, 4,156.40 and 1,685.70

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Solution

The fourth proportional to 3,011.84, 4,156.40 and 1,685.70 is: 2,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.84 : 4,156.40 = 1,685.70 : x
  2. Step 2: Convert to fraction form
    3,011.84/4,156.40 = 1,685.70/x
  3. Step 3: Cross multiply
    3,011.84x = 4,156.40 × 1,685.70
  4. Step 4: Simplify right side
    3,011.84x = 7,006,443.48
  5. Step 5: Solve for x
    x = 7,006,443.48/3,011.84
  6. Step 6: Final answer
    x = 2,326.30

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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.