Home / 6,981.80-9,636.36-4,427.91

Finding the Fourth Proportional to 6,981.80, 9,636.36 and 4,427.91

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Solution

The fourth proportional to 6,981.80, 9,636.36 and 4,427.91 is: 6,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.80 : 9,636.36 = 4,427.91 : x
  2. Step 2: Convert to fraction form
    6,981.80/9,636.36 = 4,427.91/x
  3. Step 3: Cross multiply
    6,981.80x = 9,636.36 × 4,427.91
  4. Step 4: Simplify right side
    6,981.80x = 42,668,934.81
  5. Step 5: Solve for x
    x = 42,668,934.81/6,981.80
  6. Step 6: Final answer
    x = 6,111.45

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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.