Home / 2,345.64-3,515.36-1,247.64

Finding the Fourth Proportional to 2,345.64, 3,515.36 and 1,247.64

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Solution

The fourth proportional to 2,345.64, 3,515.36 and 1,247.64 is: 1,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.64 : 3,515.36 = 1,247.64 : x
  2. Step 2: Convert to fraction form
    2,345.64/3,515.36 = 1,247.64/x
  3. Step 3: Cross multiply
    2,345.64x = 3,515.36 × 1,247.64
  4. Step 4: Simplify right side
    2,345.64x = 4,385,897.51
  5. Step 5: Solve for x
    x = 4,385,897.51/2,345.64
  6. Step 6: Final answer
    x = 1,869.81

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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.