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Finding the Fourth Proportional to 2,547.32, 3,821.58 and 903.74

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Solution

The fourth proportional to 2,547.32, 3,821.58 and 903.74 is: 1,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.32 : 3,821.58 = 903.74 : x
  2. Step 2: Convert to fraction form
    2,547.32/3,821.58 = 903.74/x
  3. Step 3: Cross multiply
    2,547.32x = 3,821.58 × 903.74
  4. Step 4: Simplify right side
    2,547.32x = 3,453,695.60
  5. Step 5: Solve for x
    x = 3,453,695.60/2,547.32
  6. Step 6: Final answer
    x = 1,355.82

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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.