Home / 2,117.88-2,925.66-1,531.50

Finding the Fourth Proportional to 2,117.88, 2,925.66 and 1,531.50

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Solution

The fourth proportional to 2,117.88, 2,925.66 and 1,531.50 is: 2,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.88 : 2,925.66 = 1,531.50 : x
  2. Step 2: Convert to fraction form
    2,117.88/2,925.66 = 1,531.50/x
  3. Step 3: Cross multiply
    2,117.88x = 2,925.66 × 1,531.50
  4. Step 4: Simplify right side
    2,117.88x = 4,480,648.29
  5. Step 5: Solve for x
    x = 4,480,648.29/2,117.88
  6. Step 6: Final answer
    x = 2,115.63

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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.