Home / 6,429.16-9,639.60-1,985.32

Finding the Fourth Proportional to 6,429.16, 9,639.60 and 1,985.32

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Solution

The fourth proportional to 6,429.16, 9,639.60 and 1,985.32 is: 2,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.16 : 9,639.60 = 1,985.32 : x
  2. Step 2: Convert to fraction form
    6,429.16/9,639.60 = 1,985.32/x
  3. Step 3: Cross multiply
    6,429.16x = 9,639.60 × 1,985.32
  4. Step 4: Simplify right side
    6,429.16x = 19,137,690.67
  5. Step 5: Solve for x
    x = 19,137,690.67/6,429.16
  6. Step 6: Final answer
    x = 2,976.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.