Home / 1,378.36-2,055.18-1,353.76

Finding the Fourth Proportional to 1,378.36, 2,055.18 and 1,353.76

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Solution

The fourth proportional to 1,378.36, 2,055.18 and 1,353.76 is: 2,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.36 : 2,055.18 = 1,353.76 : x
  2. Step 2: Convert to fraction form
    1,378.36/2,055.18 = 1,353.76/x
  3. Step 3: Cross multiply
    1,378.36x = 2,055.18 × 1,353.76
  4. Step 4: Simplify right side
    1,378.36x = 2,782,215.34
  5. Step 5: Solve for x
    x = 2,782,215.34/1,378.36
  6. Step 6: Final answer
    x = 2,018.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.