Home / 2,847.44-3,931.40-1,785.64

Finding the Fourth Proportional to 2,847.44, 3,931.40 and 1,785.64

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Solution

The fourth proportional to 2,847.44, 3,931.40 and 1,785.64 is: 2,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.44 : 3,931.40 = 1,785.64 : x
  2. Step 2: Convert to fraction form
    2,847.44/3,931.40 = 1,785.64/x
  3. Step 3: Cross multiply
    2,847.44x = 3,931.40 × 1,785.64
  4. Step 4: Simplify right side
    2,847.44x = 7,020,065.10
  5. Step 5: Solve for x
    x = 7,020,065.10/2,847.44
  6. Step 6: Final answer
    x = 2,465.40

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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.