Home / 6,985.77-9,640.58-3,842.07

Finding the Fourth Proportional to 6,985.77, 9,640.58 and 3,842.07

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Solution

The fourth proportional to 6,985.77, 9,640.58 and 3,842.07 is: 5,302.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.77 : 9,640.58 = 3,842.07 : x
  2. Step 2: Convert to fraction form
    6,985.77/9,640.58 = 3,842.07/x
  3. Step 3: Cross multiply
    6,985.77x = 9,640.58 × 3,842.07
  4. Step 4: Simplify right side
    6,985.77x = 37,039,763.99
  5. Step 5: Solve for x
    x = 37,039,763.99/6,985.77
  6. Step 6: Final answer
    x = 5,302.17

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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.