Home / 2,686.77-4,030.29-1,125.90

Finding the Fourth Proportional to 2,686.77, 4,030.29 and 1,125.90

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Solution

The fourth proportional to 2,686.77, 4,030.29 and 1,125.90 is: 1,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.77 : 4,030.29 = 1,125.90 : x
  2. Step 2: Convert to fraction form
    2,686.77/4,030.29 = 1,125.90/x
  3. Step 3: Cross multiply
    2,686.77x = 4,030.29 × 1,125.90
  4. Step 4: Simplify right side
    2,686.77x = 4,537,703.51
  5. Step 5: Solve for x
    x = 4,537,703.51/2,686.77
  6. Step 6: Final answer
    x = 1,688.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.