Home / 1,308.48-1,803.21-1,284.46

Finding the Fourth Proportional to 1,308.48, 1,803.21 and 1,284.46

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Solution

The fourth proportional to 1,308.48, 1,803.21 and 1,284.46 is: 1,770.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.48 : 1,803.21 = 1,284.46 : x
  2. Step 2: Convert to fraction form
    1,308.48/1,803.21 = 1,284.46/x
  3. Step 3: Cross multiply
    1,308.48x = 1,803.21 × 1,284.46
  4. Step 4: Simplify right side
    1,308.48x = 2,316,151.12
  5. Step 5: Solve for x
    x = 2,316,151.12/1,308.48
  6. Step 6: Final answer
    x = 1,770.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.