Home / 2,715.59-3,747.66-1,720.51

Finding the Fourth Proportional to 2,715.59, 3,747.66 and 1,720.51

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Solution

The fourth proportional to 2,715.59, 3,747.66 and 1,720.51 is: 2,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.59 : 3,747.66 = 1,720.51 : x
  2. Step 2: Convert to fraction form
    2,715.59/3,747.66 = 1,720.51/x
  3. Step 3: Cross multiply
    2,715.59x = 3,747.66 × 1,720.51
  4. Step 4: Simplify right side
    2,715.59x = 6,447,886.51
  5. Step 5: Solve for x
    x = 6,447,886.51/2,715.59
  6. Step 6: Final answer
    x = 2,374.40

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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.