Home / 1,453.12-2,005.60-864.16

Finding the Fourth Proportional to 1,453.12, 2,005.60 and 864.16

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Solution

The fourth proportional to 1,453.12, 2,005.60 and 864.16 is: 1,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.12 : 2,005.60 = 864.16 : x
  2. Step 2: Convert to fraction form
    1,453.12/2,005.60 = 864.16/x
  3. Step 3: Cross multiply
    1,453.12x = 2,005.60 × 864.16
  4. Step 4: Simplify right side
    1,453.12x = 1,733,159.30
  5. Step 5: Solve for x
    x = 1,733,159.30/1,453.12
  6. Step 6: Final answer
    x = 1,192.72

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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.