Home / 7,421.84-11,117.64-3,514.40

Finding the Fourth Proportional to 7,421.84, 11,117.64 and 3,514.40

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Solution

The fourth proportional to 7,421.84, 11,117.64 and 3,514.40 is: 5,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.84 : 11,117.64 = 3,514.40 : x
  2. Step 2: Convert to fraction form
    7,421.84/11,117.64 = 3,514.40/x
  3. Step 3: Cross multiply
    7,421.84x = 11,117.64 × 3,514.40
  4. Step 4: Simplify right side
    7,421.84x = 39,071,834.02
  5. Step 5: Solve for x
    x = 39,071,834.02/7,421.84
  6. Step 6: Final answer
    x = 5,264.44

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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.