Home / 1,409.30-1,946.40-1,190.06

Finding the Fourth Proportional to 1,409.30, 1,946.40 and 1,190.06

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Solution

The fourth proportional to 1,409.30, 1,946.40 and 1,190.06 is: 1,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.30 : 1,946.40 = 1,190.06 : x
  2. Step 2: Convert to fraction form
    1,409.30/1,946.40 = 1,190.06/x
  3. Step 3: Cross multiply
    1,409.30x = 1,946.40 × 1,190.06
  4. Step 4: Simplify right side
    1,409.30x = 2,316,332.78
  5. Step 5: Solve for x
    x = 2,316,332.78/1,409.30
  6. Step 6: Final answer
    x = 1,643.61

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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.