Home / 2,567.64-3,543.36-1,388.71

Finding the Fourth Proportional to 2,567.64, 3,543.36 and 1,388.71

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Solution

The fourth proportional to 2,567.64, 3,543.36 and 1,388.71 is: 1,916.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.64 : 3,543.36 = 1,388.71 : x
  2. Step 2: Convert to fraction form
    2,567.64/3,543.36 = 1,388.71/x
  3. Step 3: Cross multiply
    2,567.64x = 3,543.36 × 1,388.71
  4. Step 4: Simplify right side
    2,567.64x = 4,920,699.47
  5. Step 5: Solve for x
    x = 4,920,699.47/2,567.64
  6. Step 6: Final answer
    x = 1,916.43

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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.