Home / 3,913.40-5,870.41-1,140.11

Finding the Fourth Proportional to 3,913.40, 5,870.41 and 1,140.11

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Solution

The fourth proportional to 3,913.40, 5,870.41 and 1,140.11 is: 1,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.40 : 5,870.41 = 1,140.11 : x
  2. Step 2: Convert to fraction form
    3,913.40/5,870.41 = 1,140.11/x
  3. Step 3: Cross multiply
    3,913.40x = 5,870.41 × 1,140.11
  4. Step 4: Simplify right side
    3,913.40x = 6,692,913.15
  5. Step 5: Solve for x
    x = 6,692,913.15/3,913.40
  6. Step 6: Final answer
    x = 1,710.26

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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.