Home / 3,264.40-4,897.68-1,315.60

Finding the Fourth Proportional to 3,264.40, 4,897.68 and 1,315.60

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Solution

The fourth proportional to 3,264.40, 4,897.68 and 1,315.60 is: 1,973.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,264.40 : 4,897.68 = 1,315.60 : x
  2. Step 2: Convert to fraction form
    3,264.40/4,897.68 = 1,315.60/x
  3. Step 3: Cross multiply
    3,264.40x = 4,897.68 × 1,315.60
  4. Step 4: Simplify right side
    3,264.40x = 6,443,387.81
  5. Step 5: Solve for x
    x = 6,443,387.81/3,264.40
  6. Step 6: Final answer
    x = 1,973.84

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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.