Home / 6,985.36-9,639.37-4,000.51

Finding the Fourth Proportional to 6,985.36, 9,639.37 and 4,000.51

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Solution

The fourth proportional to 6,985.36, 9,639.37 and 4,000.51 is: 5,520.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.36 : 9,639.37 = 4,000.51 : x
  2. Step 2: Convert to fraction form
    6,985.36/9,639.37 = 4,000.51/x
  3. Step 3: Cross multiply
    6,985.36x = 9,639.37 × 4,000.51
  4. Step 4: Simplify right side
    6,985.36x = 38,562,396.08
  5. Step 5: Solve for x
    x = 38,562,396.08/6,985.36
  6. Step 6: Final answer
    x = 5,520.46

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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.