Home / 2,390.56-3,298.73-1,395.70

Finding the Fourth Proportional to 2,390.56, 3,298.73 and 1,395.70

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Solution

The fourth proportional to 2,390.56, 3,298.73 and 1,395.70 is: 1,925.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.56 : 3,298.73 = 1,395.70 : x
  2. Step 2: Convert to fraction form
    2,390.56/3,298.73 = 1,395.70/x
  3. Step 3: Cross multiply
    2,390.56x = 3,298.73 × 1,395.70
  4. Step 4: Simplify right side
    2,390.56x = 4,604,037.46
  5. Step 5: Solve for x
    x = 4,604,037.46/2,390.56
  6. Step 6: Final answer
    x = 1,925.93

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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.