Home / 4,782.96-7,173.16-1,320.40

Finding the Fourth Proportional to 4,782.96, 7,173.16 and 1,320.40

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Solution

The fourth proportional to 4,782.96, 7,173.16 and 1,320.40 is: 1,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.96 : 7,173.16 = 1,320.40 : x
  2. Step 2: Convert to fraction form
    4,782.96/7,173.16 = 1,320.40/x
  3. Step 3: Cross multiply
    4,782.96x = 7,173.16 × 1,320.40
  4. Step 4: Simplify right side
    4,782.96x = 9,471,440.46
  5. Step 5: Solve for x
    x = 9,471,440.46/4,782.96
  6. Step 6: Final answer
    x = 1,980.25

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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.