Home / 1,056.63-1,584.94-287.13

Finding the Fourth Proportional to 1,056.63, 1,584.94 and 287.13

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Solution

The fourth proportional to 1,056.63, 1,584.94 and 287.13 is: 430.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.63 : 1,584.94 = 287.13 : x
  2. Step 2: Convert to fraction form
    1,056.63/1,584.94 = 287.13/x
  3. Step 3: Cross multiply
    1,056.63x = 1,584.94 × 287.13
  4. Step 4: Simplify right side
    1,056.63x = 455,083.82
  5. Step 5: Solve for x
    x = 455,083.82/1,056.63
  6. Step 6: Final answer
    x = 430.69

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.