Home / 2,686.65-4,030.53-1,125.84

Finding the Fourth Proportional to 2,686.65, 4,030.53 and 1,125.84

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Solution

The fourth proportional to 2,686.65, 4,030.53 and 1,125.84 is: 1,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.65 : 4,030.53 = 1,125.84 : x
  2. Step 2: Convert to fraction form
    2,686.65/4,030.53 = 1,125.84/x
  3. Step 3: Cross multiply
    2,686.65x = 4,030.53 × 1,125.84
  4. Step 4: Simplify right side
    2,686.65x = 4,537,731.90
  5. Step 5: Solve for x
    x = 4,537,731.90/2,686.65
  6. Step 6: Final answer
    x = 1,688.99

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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.