Home / 7,812.49-10,784.80-4,983.75

Finding the Fourth Proportional to 7,812.49, 10,784.80 and 4,983.75

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Solution

The fourth proportional to 7,812.49, 10,784.80 and 4,983.75 is: 6,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.49 : 10,784.80 = 4,983.75 : x
  2. Step 2: Convert to fraction form
    7,812.49/10,784.80 = 4,983.75/x
  3. Step 3: Cross multiply
    7,812.49x = 10,784.80 × 4,983.75
  4. Step 4: Simplify right side
    7,812.49x = 53,748,747
  5. Step 5: Solve for x
    x = 53,748,747/7,812.49
  6. Step 6: Final answer
    x = 6,879.85

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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.