Home / 1,539.45-2,124.51-867.30

Finding the Fourth Proportional to 1,539.45, 2,124.51 and 867.30

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Solution

The fourth proportional to 1,539.45, 2,124.51 and 867.30 is: 1,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.45 : 2,124.51 = 867.30 : x
  2. Step 2: Convert to fraction form
    1,539.45/2,124.51 = 867.30/x
  3. Step 3: Cross multiply
    1,539.45x = 2,124.51 × 867.30
  4. Step 4: Simplify right side
    1,539.45x = 1,842,587.52
  5. Step 5: Solve for x
    x = 1,842,587.52/1,539.45
  6. Step 6: Final answer
    x = 1,196.91

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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.