Home / 1,501.02-2,070.85-871.20

Finding the Fourth Proportional to 1,501.02, 2,070.85 and 871.20

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Solution

The fourth proportional to 1,501.02, 2,070.85 and 871.20 is: 1,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.02 : 2,070.85 = 871.20 : x
  2. Step 2: Convert to fraction form
    1,501.02/2,070.85 = 871.20/x
  3. Step 3: Cross multiply
    1,501.02x = 2,070.85 × 871.20
  4. Step 4: Simplify right side
    1,501.02x = 1,804,124.52
  5. Step 5: Solve for x
    x = 1,804,124.52/1,501.02
  6. Step 6: Final answer
    x = 1,201.93

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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.