Home / 1,640.37-2,264.09-1,116.57

Finding the Fourth Proportional to 1,640.37, 2,264.09 and 1,116.57

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Solution

The fourth proportional to 1,640.37, 2,264.09 and 1,116.57 is: 1,541.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.37 : 2,264.09 = 1,116.57 : x
  2. Step 2: Convert to fraction form
    1,640.37/2,264.09 = 1,116.57/x
  3. Step 3: Cross multiply
    1,640.37x = 2,264.09 × 1,116.57
  4. Step 4: Simplify right side
    1,640.37x = 2,528,009.39
  5. Step 5: Solve for x
    x = 2,528,009.39/1,640.37
  6. Step 6: Final answer
    x = 1,541.12

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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.