Home / 1,501.80-2,072.40-942.36

Finding the Fourth Proportional to 1,501.80, 2,072.40 and 942.36

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Solution

The fourth proportional to 1,501.80, 2,072.40 and 942.36 is: 1,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.80 : 2,072.40 = 942.36 : x
  2. Step 2: Convert to fraction form
    1,501.80/2,072.40 = 942.36/x
  3. Step 3: Cross multiply
    1,501.80x = 2,072.40 × 942.36
  4. Step 4: Simplify right side
    1,501.80x = 1,952,946.86
  5. Step 5: Solve for x
    x = 1,952,946.86/1,501.80
  6. Step 6: Final answer
    x = 1,300.40

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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.