Home / 1,989.46-2,984.20-602.80

Finding the Fourth Proportional to 1,989.46, 2,984.20 and 602.80

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Solution

The fourth proportional to 1,989.46, 2,984.20 and 602.80 is: 904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.46 : 2,984.20 = 602.80 : x
  2. Step 2: Convert to fraction form
    1,989.46/2,984.20 = 602.80/x
  3. Step 3: Cross multiply
    1,989.46x = 2,984.20 × 602.80
  4. Step 4: Simplify right side
    1,989.46x = 1,798,875.76
  5. Step 5: Solve for x
    x = 1,798,875.76/1,989.46
  6. Step 6: Final answer
    x = 904.20

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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.