Home / 3,011.86-4,156.57-1,685.69

Finding the Fourth Proportional to 3,011.86, 4,156.57 and 1,685.69

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Solution

The fourth proportional to 3,011.86, 4,156.57 and 1,685.69 is: 2,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.86 : 4,156.57 = 1,685.69 : x
  2. Step 2: Convert to fraction form
    3,011.86/4,156.57 = 1,685.69/x
  3. Step 3: Cross multiply
    3,011.86x = 4,156.57 × 1,685.69
  4. Step 4: Simplify right side
    3,011.86x = 7,006,688.48
  5. Step 5: Solve for x
    x = 7,006,688.48/3,011.86
  6. Step 6: Final answer
    x = 2,326.37

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Half scale
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Double scale
Find fourth proportional to 3,012.86, 4,157.95 and 1,686.69
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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.