Home / 4,309.40-6,465.02-1,387.60

Finding the Fourth Proportional to 4,309.40, 6,465.02 and 1,387.60

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Solution

The fourth proportional to 4,309.40, 6,465.02 and 1,387.60 is: 2,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.40 : 6,465.02 = 1,387.60 : x
  2. Step 2: Convert to fraction form
    4,309.40/6,465.02 = 1,387.60/x
  3. Step 3: Cross multiply
    4,309.40x = 6,465.02 × 1,387.60
  4. Step 4: Simplify right side
    4,309.40x = 8,970,838.65
  5. Step 5: Solve for x
    x = 8,970,838.65/4,309.40
  6. Step 6: Final answer
    x = 2,081.69

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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.