Home / 1,025.04-1,417.18-789.76

Finding the Fourth Proportional to 1,025.04, 1,417.18 and 789.76

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Solution

The fourth proportional to 1,025.04, 1,417.18 and 789.76 is: 1,091.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.04 : 1,417.18 = 789.76 : x
  2. Step 2: Convert to fraction form
    1,025.04/1,417.18 = 789.76/x
  3. Step 3: Cross multiply
    1,025.04x = 1,417.18 × 789.76
  4. Step 4: Simplify right side
    1,025.04x = 1,119,232.08
  5. Step 5: Solve for x
    x = 1,119,232.08/1,025.04
  6. Step 6: Final answer
    x = 1,091.89

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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.