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Finding the Fourth Proportional to 5,323.40, 7,988.88 and 1,860.68

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Solution

The fourth proportional to 5,323.40, 7,988.88 and 1,860.68 is: 2,792.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,323.40 : 7,988.88 = 1,860.68 : x
  2. Step 2: Convert to fraction form
    5,323.40/7,988.88 = 1,860.68/x
  3. Step 3: Cross multiply
    5,323.40x = 7,988.88 × 1,860.68
  4. Step 4: Simplify right side
    5,323.40x = 14,864,749.24
  5. Step 5: Solve for x
    x = 14,864,749.24/5,323.40
  6. Step 6: Final answer
    x = 2,792.34

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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.