Home / 1,330.13-2,005.16-1,240.93

Finding the Fourth Proportional to 1,330.13, 2,005.16 and 1,240.93

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Solution

The fourth proportional to 1,330.13, 2,005.16 and 1,240.93 is: 1,870.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.13 : 2,005.16 = 1,240.93 : x
  2. Step 2: Convert to fraction form
    1,330.13/2,005.16 = 1,240.93/x
  3. Step 3: Cross multiply
    1,330.13x = 2,005.16 × 1,240.93
  4. Step 4: Simplify right side
    1,330.13x = 2,488,259.50
  5. Step 5: Solve for x
    x = 2,488,259.50/1,330.13
  6. Step 6: Final answer
    x = 1,870.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.