Home / 2,989.21-4,124.93-1,730.18

Finding the Fourth Proportional to 2,989.21, 4,124.93 and 1,730.18

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Solution

The fourth proportional to 2,989.21, 4,124.93 and 1,730.18 is: 2,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.21 : 4,124.93 = 1,730.18 : x
  2. Step 2: Convert to fraction form
    2,989.21/4,124.93 = 1,730.18/x
  3. Step 3: Cross multiply
    2,989.21x = 4,124.93 × 1,730.18
  4. Step 4: Simplify right side
    2,989.21x = 7,136,871.39
  5. Step 5: Solve for x
    x = 7,136,871.39/2,989.21
  6. Step 6: Final answer
    x = 2,387.54

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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.