Home / 1,434.10-2,153.58-786.10

Finding the Fourth Proportional to 1,434.10, 2,153.58 and 786.10

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Solution

The fourth proportional to 1,434.10, 2,153.58 and 786.10 is: 1,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.10 : 2,153.58 = 786.10 : x
  2. Step 2: Convert to fraction form
    1,434.10/2,153.58 = 786.10/x
  3. Step 3: Cross multiply
    1,434.10x = 2,153.58 × 786.10
  4. Step 4: Simplify right side
    1,434.10x = 1,692,929.24
  5. Step 5: Solve for x
    x = 1,692,929.24/1,434.10
  6. Step 6: Final answer
    x = 1,180.48

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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.