Home / 7,089.36-9,783.56-3,945.76

Finding the Fourth Proportional to 7,089.36, 9,783.56 and 3,945.76

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Solution

The fourth proportional to 7,089.36, 9,783.56 and 3,945.76 is: 5,445.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.36 : 9,783.56 = 3,945.76 : x
  2. Step 2: Convert to fraction form
    7,089.36/9,783.56 = 3,945.76/x
  3. Step 3: Cross multiply
    7,089.36x = 9,783.56 × 3,945.76
  4. Step 4: Simplify right side
    7,089.36x = 38,603,579.71
  5. Step 5: Solve for x
    x = 38,603,579.71/7,089.36
  6. Step 6: Final answer
    x = 5,445.28

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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.