Home / 1,386.45-2,079.75-462.10

Finding the Fourth Proportional to 1,386.45, 2,079.75 and 462.10

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Solution

The fourth proportional to 1,386.45, 2,079.75 and 462.10 is: 693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.45 : 2,079.75 = 462.10 : x
  2. Step 2: Convert to fraction form
    1,386.45/2,079.75 = 462.10/x
  3. Step 3: Cross multiply
    1,386.45x = 2,079.75 × 462.10
  4. Step 4: Simplify right side
    1,386.45x = 961,052.48
  5. Step 5: Solve for x
    x = 961,052.48/1,386.45
  6. Step 6: Final answer
    x = 693.17

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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.