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Finding the Fourth Proportional to 1,677.51, 2,316.11 and 1,015.53

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Solution

The fourth proportional to 1,677.51, 2,316.11 and 1,015.53 is: 1,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.51 : 2,316.11 = 1,015.53 : x
  2. Step 2: Convert to fraction form
    1,677.51/2,316.11 = 1,015.53/x
  3. Step 3: Cross multiply
    1,677.51x = 2,316.11 × 1,015.53
  4. Step 4: Simplify right side
    1,677.51x = 2,352,079.19
  5. Step 5: Solve for x
    x = 2,352,079.19/1,677.51
  6. Step 6: Final answer
    x = 1,402.13

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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.