Home / 9,619.54-13,275.02-5,640.71

Finding the Fourth Proportional to 9,619.54, 13,275.02 and 5,640.71

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Solution

The fourth proportional to 9,619.54, 13,275.02 and 5,640.71 is: 7,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,619.54 : 13,275.02 = 5,640.71 : x
  2. Step 2: Convert to fraction form
    9,619.54/13,275.02 = 5,640.71/x
  3. Step 3: Cross multiply
    9,619.54x = 13,275.02 × 5,640.71
  4. Step 4: Simplify right side
    9,619.54x = 74,880,543.05
  5. Step 5: Solve for x
    x = 74,880,543.05/9,619.54
  6. Step 6: Final answer
    x = 7,784.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.