Home / 1,510.12-2,082.18-1,288.36

Finding the Fourth Proportional to 1,510.12, 2,082.18 and 1,288.36

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Solution

The fourth proportional to 1,510.12, 2,082.18 and 1,288.36 is: 1,776.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.12 : 2,082.18 = 1,288.36 : x
  2. Step 2: Convert to fraction form
    1,510.12/2,082.18 = 1,288.36/x
  3. Step 3: Cross multiply
    1,510.12x = 2,082.18 × 1,288.36
  4. Step 4: Simplify right side
    1,510.12x = 2,682,597.42
  5. Step 5: Solve for x
    x = 2,682,597.42/1,510.12
  6. Step 6: Final answer
    x = 1,776.41

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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.