Home / 1,409.10-1,944.30-1,011.49

Finding the Fourth Proportional to 1,409.10, 1,944.30 and 1,011.49

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Solution

The fourth proportional to 1,409.10, 1,944.30 and 1,011.49 is: 1,395.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.10 : 1,944.30 = 1,011.49 : x
  2. Step 2: Convert to fraction form
    1,409.10/1,944.30 = 1,011.49/x
  3. Step 3: Cross multiply
    1,409.10x = 1,944.30 × 1,011.49
  4. Step 4: Simplify right side
    1,409.10x = 1,966,638.94
  5. Step 5: Solve for x
    x = 1,966,638.94/1,409.10
  6. Step 6: Final answer
    x = 1,395.67

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Double scale
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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.