Home / 3,386.28-4,673.70-1,970.40

Finding the Fourth Proportional to 3,386.28, 4,673.70 and 1,970.40

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Solution

The fourth proportional to 3,386.28, 4,673.70 and 1,970.40 is: 2,719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.28 : 4,673.70 = 1,970.40 : x
  2. Step 2: Convert to fraction form
    3,386.28/4,673.70 = 1,970.40/x
  3. Step 3: Cross multiply
    3,386.28x = 4,673.70 × 1,970.40
  4. Step 4: Simplify right side
    3,386.28x = 9,209,058.48
  5. Step 5: Solve for x
    x = 9,209,058.48/3,386.28
  6. Step 6: Final answer
    x = 2,719.52

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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.