Home / 1,529.60-2,290.80-946.40

Finding the Fourth Proportional to 1,529.60, 2,290.80 and 946.40

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Solution

The fourth proportional to 1,529.60, 2,290.80 and 946.40 is: 1,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.60 : 2,290.80 = 946.40 : x
  2. Step 2: Convert to fraction form
    1,529.60/2,290.80 = 946.40/x
  3. Step 3: Cross multiply
    1,529.60x = 2,290.80 × 946.40
  4. Step 4: Simplify right side
    1,529.60x = 2,168,013.12
  5. Step 5: Solve for x
    x = 2,168,013.12/1,529.60
  6. Step 6: Final answer
    x = 1,417.37

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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.