Home / 1,937.02-2,905.23-638.20

Finding the Fourth Proportional to 1,937.02, 2,905.23 and 638.20

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Solution

The fourth proportional to 1,937.02, 2,905.23 and 638.20 is: 957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.02 : 2,905.23 = 638.20 : x
  2. Step 2: Convert to fraction form
    1,937.02/2,905.23 = 638.20/x
  3. Step 3: Cross multiply
    1,937.02x = 2,905.23 × 638.20
  4. Step 4: Simplify right side
    1,937.02x = 1,854,117.79
  5. Step 5: Solve for x
    x = 1,854,117.79/1,937.02
  6. Step 6: Final answer
    x = 957.20

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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.