Home / 7,830.80-10,806.26-4,293.90

Finding the Fourth Proportional to 7,830.80, 10,806.26 and 4,293.90

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Solution

The fourth proportional to 7,830.80, 10,806.26 and 4,293.90 is: 5,925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.80 : 10,806.26 = 4,293.90 : x
  2. Step 2: Convert to fraction form
    7,830.80/10,806.26 = 4,293.90/x
  3. Step 3: Cross multiply
    7,830.80x = 10,806.26 × 4,293.90
  4. Step 4: Simplify right side
    7,830.80x = 46,400,999.81
  5. Step 5: Solve for x
    x = 46,400,999.81/7,830.80
  6. Step 6: Final answer
    x = 5,925.45

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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.