Home / 1,688.04-2,513.25-1,679.40

Finding the Fourth Proportional to 1,688.04, 2,513.25 and 1,679.40

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Solution

The fourth proportional to 1,688.04, 2,513.25 and 1,679.40 is: 2,500.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.04 : 2,513.25 = 1,679.40 : x
  2. Step 2: Convert to fraction form
    1,688.04/2,513.25 = 1,679.40/x
  3. Step 3: Cross multiply
    1,688.04x = 2,513.25 × 1,679.40
  4. Step 4: Simplify right side
    1,688.04x = 4,220,752.05
  5. Step 5: Solve for x
    x = 4,220,752.05/1,688.04
  6. Step 6: Final answer
    x = 2,500.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.