Home / 1,916.96-2,645.16-1,130.72

Finding the Fourth Proportional to 1,916.96, 2,645.16 and 1,130.72

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Solution

The fourth proportional to 1,916.96, 2,645.16 and 1,130.72 is: 1,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.96 : 2,645.16 = 1,130.72 : x
  2. Step 2: Convert to fraction form
    1,916.96/2,645.16 = 1,130.72/x
  3. Step 3: Cross multiply
    1,916.96x = 2,645.16 × 1,130.72
  4. Step 4: Simplify right side
    1,916.96x = 2,990,935.32
  5. Step 5: Solve for x
    x = 2,990,935.32/1,916.96
  6. Step 6: Final answer
    x = 1,560.25

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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.