Home / 1,475.79-2,210.85-1,321.08

Finding the Fourth Proportional to 1,475.79, 2,210.85 and 1,321.08

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Solution

The fourth proportional to 1,475.79, 2,210.85 and 1,321.08 is: 1,979.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.79 : 2,210.85 = 1,321.08 : x
  2. Step 2: Convert to fraction form
    1,475.79/2,210.85 = 1,321.08/x
  3. Step 3: Cross multiply
    1,475.79x = 2,210.85 × 1,321.08
  4. Step 4: Simplify right side
    1,475.79x = 2,920,709.72
  5. Step 5: Solve for x
    x = 2,920,709.72/1,475.79
  6. Step 6: Final answer
    x = 1,979.08

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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.