Home / 2,989.60-4,483.20-1,140.08

Finding the Fourth Proportional to 2,989.60, 4,483.20 and 1,140.08

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Solution

The fourth proportional to 2,989.60, 4,483.20 and 1,140.08 is: 1,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.60 : 4,483.20 = 1,140.08 : x
  2. Step 2: Convert to fraction form
    2,989.60/4,483.20 = 1,140.08/x
  3. Step 3: Cross multiply
    2,989.60x = 4,483.20 × 1,140.08
  4. Step 4: Simplify right side
    2,989.60x = 5,111,206.66
  5. Step 5: Solve for x
    x = 5,111,206.66/2,989.60
  6. Step 6: Final answer
    x = 1,709.66

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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.