Home / 7,113.31-9,816.40-3,969.52

Finding the Fourth Proportional to 7,113.31, 9,816.40 and 3,969.52

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Solution

The fourth proportional to 7,113.31, 9,816.40 and 3,969.52 is: 5,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.31 : 9,816.40 = 3,969.52 : x
  2. Step 2: Convert to fraction form
    7,113.31/9,816.40 = 3,969.52/x
  3. Step 3: Cross multiply
    7,113.31x = 9,816.40 × 3,969.52
  4. Step 4: Simplify right side
    7,113.31x = 38,966,337.12
  5. Step 5: Solve for x
    x = 38,966,337.12/7,113.31
  6. Step 6: Final answer
    x = 5,477.95

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1.5x scale

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.