Home / 5,140.16-7,710.32-1,630.12

Finding the Fourth Proportional to 5,140.16, 7,710.32 and 1,630.12

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Solution

The fourth proportional to 5,140.16, 7,710.32 and 1,630.12 is: 2,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.16 : 7,710.32 = 1,630.12 : x
  2. Step 2: Convert to fraction form
    5,140.16/7,710.32 = 1,630.12/x
  3. Step 3: Cross multiply
    5,140.16x = 7,710.32 × 1,630.12
  4. Step 4: Simplify right side
    5,140.16x = 12,568,746.84
  5. Step 5: Solve for x
    x = 12,568,746.84/5,140.16
  6. Step 6: Final answer
    x = 2,445.21

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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.