Home / 1,640.49-2,460.75-914.67

Finding the Fourth Proportional to 1,640.49, 2,460.75 and 914.67

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Solution

The fourth proportional to 1,640.49, 2,460.75 and 914.67 is: 1,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.49 : 2,460.75 = 914.67 : x
  2. Step 2: Convert to fraction form
    1,640.49/2,460.75 = 914.67/x
  3. Step 3: Cross multiply
    1,640.49x = 2,460.75 × 914.67
  4. Step 4: Simplify right side
    1,640.49x = 2,250,774.20
  5. Step 5: Solve for x
    x = 2,250,774.20/1,640.49
  6. Step 6: Final answer
    x = 1,372.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.