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Finding the Fourth Proportional to 7,089.87, 9,783.94 and 3,903.10

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Solution

The fourth proportional to 7,089.87, 9,783.94 and 3,903.10 is: 5,386.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.87 : 9,783.94 = 3,903.10 : x
  2. Step 2: Convert to fraction form
    7,089.87/9,783.94 = 3,903.10/x
  3. Step 3: Cross multiply
    7,089.87x = 9,783.94 × 3,903.10
  4. Step 4: Simplify right side
    7,089.87x = 38,187,647.29
  5. Step 5: Solve for x
    x = 38,187,647.29/7,089.87
  6. Step 6: Final answer
    x = 5,386.23

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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.