Home / 1,325.48-1,988.74-1,217.84

Finding the Fourth Proportional to 1,325.48, 1,988.74 and 1,217.84

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Solution

The fourth proportional to 1,325.48, 1,988.74 and 1,217.84 is: 1,827.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.48 : 1,988.74 = 1,217.84 : x
  2. Step 2: Convert to fraction form
    1,325.48/1,988.74 = 1,217.84/x
  3. Step 3: Cross multiply
    1,325.48x = 1,988.74 × 1,217.84
  4. Step 4: Simplify right side
    1,325.48x = 2,421,967.12
  5. Step 5: Solve for x
    x = 2,421,967.12/1,325.48
  6. Step 6: Final answer
    x = 1,827.24

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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.