Home / 7,809.07-10,776.35-4,272.20

Finding the Fourth Proportional to 7,809.07, 10,776.35 and 4,272.20

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Solution

The fourth proportional to 7,809.07, 10,776.35 and 4,272.20 is: 5,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.07 : 10,776.35 = 4,272.20 : x
  2. Step 2: Convert to fraction form
    7,809.07/10,776.35 = 4,272.20/x
  3. Step 3: Cross multiply
    7,809.07x = 10,776.35 × 4,272.20
  4. Step 4: Simplify right side
    7,809.07x = 46,038,701.11
  5. Step 5: Solve for x
    x = 46,038,701.11/7,809.07
  6. Step 6: Final answer
    x = 5,895.55

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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.