Home / 3,913.56-5,870.32-1,140.31

Finding the Fourth Proportional to 3,913.56, 5,870.32 and 1,140.31

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Solution

The fourth proportional to 3,913.56, 5,870.32 and 1,140.31 is: 1,710.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.56 : 5,870.32 = 1,140.31 : x
  2. Step 2: Convert to fraction form
    3,913.56/5,870.32 = 1,140.31/x
  3. Step 3: Cross multiply
    3,913.56x = 5,870.32 × 1,140.31
  4. Step 4: Simplify right side
    3,913.56x = 6,693,984.60
  5. Step 5: Solve for x
    x = 6,693,984.60/3,913.56
  6. Step 6: Final answer
    x = 1,710.46

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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.