Home / 2,989.92-4,482.94-1,430.20

Finding the Fourth Proportional to 2,989.92, 4,482.94 and 1,430.20

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Solution

The fourth proportional to 2,989.92, 4,482.94 and 1,430.20 is: 2,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.92 : 4,482.94 = 1,430.20 : x
  2. Step 2: Convert to fraction form
    2,989.92/4,482.94 = 1,430.20/x
  3. Step 3: Cross multiply
    2,989.92x = 4,482.94 × 1,430.20
  4. Step 4: Simplify right side
    2,989.92x = 6,411,500.79
  5. Step 5: Solve for x
    x = 6,411,500.79/2,989.92
  6. Step 6: Final answer
    x = 2,144.37

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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.