Home / 1,461.04-2,190.32-638.69

Finding the Fourth Proportional to 1,461.04, 2,190.32 and 638.69

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Solution

The fourth proportional to 1,461.04, 2,190.32 and 638.69 is: 957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.04 : 2,190.32 = 638.69 : x
  2. Step 2: Convert to fraction form
    1,461.04/2,190.32 = 638.69/x
  3. Step 3: Cross multiply
    1,461.04x = 2,190.32 × 638.69
  4. Step 4: Simplify right side
    1,461.04x = 1,398,926.13
  5. Step 5: Solve for x
    x = 1,398,926.13/1,461.04
  6. Step 6: Final answer
    x = 957.49

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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.