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Finding the Fourth Proportional to 2,707.47, 3,738.38 and 1,715.13

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Solution

The fourth proportional to 2,707.47, 3,738.38 and 1,715.13 is: 2,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.47 : 3,738.38 = 1,715.13 : x
  2. Step 2: Convert to fraction form
    2,707.47/3,738.38 = 1,715.13/x
  3. Step 3: Cross multiply
    2,707.47x = 3,738.38 × 1,715.13
  4. Step 4: Simplify right side
    2,707.47x = 6,411,799.11
  5. Step 5: Solve for x
    x = 6,411,799.11/2,707.47
  6. Step 6: Final answer
    x = 2,368.19

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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.