Home / 3,007.20-4,510.80-1,158.40

Finding the Fourth Proportional to 3,007.20, 4,510.80 and 1,158.40

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Solution

The fourth proportional to 3,007.20, 4,510.80 and 1,158.40 is: 1,737.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.20 : 4,510.80 = 1,158.40 : x
  2. Step 2: Convert to fraction form
    3,007.20/4,510.80 = 1,158.40/x
  3. Step 3: Cross multiply
    3,007.20x = 4,510.80 × 1,158.40
  4. Step 4: Simplify right side
    3,007.20x = 5,225,310.72
  5. Step 5: Solve for x
    x = 5,225,310.72/3,007.20
  6. Step 6: Final answer
    x = 1,737.60

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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.