Home / 4,285-5,918.16-2,885.32

Finding the Fourth Proportional to 4,285, 5,918.16 and 2,885.32

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Solution

The fourth proportional to 4,285, 5,918.16 and 2,885.32 is: 3,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285 : 5,918.16 = 2,885.32 : x
  2. Step 2: Convert to fraction form
    4,285/5,918.16 = 2,885.32/x
  3. Step 3: Cross multiply
    4,285x = 5,918.16 × 2,885.32
  4. Step 4: Simplify right side
    4,285x = 17,075,785.41
  5. Step 5: Solve for x
    x = 17,075,785.41/4,285
  6. Step 6: Final answer
    x = 3,985.01

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Half scale
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Double scale
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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.