Home / 3,011.16-4,155.51-1,685.16

Finding the Fourth Proportional to 3,011.16, 4,155.51 and 1,685.16

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Solution

The fourth proportional to 3,011.16, 4,155.51 and 1,685.16 is: 2,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.16 : 4,155.51 = 1,685.16 : x
  2. Step 2: Convert to fraction form
    3,011.16/4,155.51 = 1,685.16/x
  3. Step 3: Cross multiply
    3,011.16x = 4,155.51 × 1,685.16
  4. Step 4: Simplify right side
    3,011.16x = 7,002,699.23
  5. Step 5: Solve for x
    x = 7,002,699.23/3,011.16
  6. Step 6: Final answer
    x = 2,325.58

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Half scale
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Find fourth proportional to 3,012.16, 4,156.89 and 1,686.16
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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.