Home / 1,520.91-2,095.88-1,240.65

Finding the Fourth Proportional to 1,520.91, 2,095.88 and 1,240.65

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Solution

The fourth proportional to 1,520.91, 2,095.88 and 1,240.65 is: 1,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.91 : 2,095.88 = 1,240.65 : x
  2. Step 2: Convert to fraction form
    1,520.91/2,095.88 = 1,240.65/x
  3. Step 3: Cross multiply
    1,520.91x = 2,095.88 × 1,240.65
  4. Step 4: Simplify right side
    1,520.91x = 2,600,247.32
  5. Step 5: Solve for x
    x = 2,600,247.32/1,520.91
  6. Step 6: Final answer
    x = 1,709.67

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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.