Home / 9,640.15-13,303.49-5,661.32

Finding the Fourth Proportional to 9,640.15, 13,303.49 and 5,661.32

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Solution

The fourth proportional to 9,640.15, 13,303.49 and 5,661.32 is: 7,812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640.15 : 13,303.49 = 5,661.32 : x
  2. Step 2: Convert to fraction form
    9,640.15/13,303.49 = 5,661.32/x
  3. Step 3: Cross multiply
    9,640.15x = 13,303.49 × 5,661.32
  4. Step 4: Simplify right side
    9,640.15x = 75,315,219.18
  5. Step 5: Solve for x
    x = 75,315,219.18/9,640.15
  6. Step 6: Final answer
    x = 7,812.66

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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.