Home / 1,656.40-2,285.80-984.10

Finding the Fourth Proportional to 1,656.40, 2,285.80 and 984.10

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Solution

The fourth proportional to 1,656.40, 2,285.80 and 984.10 is: 1,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.40 : 2,285.80 = 984.10 : x
  2. Step 2: Convert to fraction form
    1,656.40/2,285.80 = 984.10/x
  3. Step 3: Cross multiply
    1,656.40x = 2,285.80 × 984.10
  4. Step 4: Simplify right side
    1,656.40x = 2,249,455.78
  5. Step 5: Solve for x
    x = 2,249,455.78/1,656.40
  6. Step 6: Final answer
    x = 1,358.04

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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.