Home / 1,117.11-1,541.78-697.53

Finding the Fourth Proportional to 1,117.11, 1,541.78 and 697.53

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Solution

The fourth proportional to 1,117.11, 1,541.78 and 697.53 is: 962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.11 : 1,541.78 = 697.53 : x
  2. Step 2: Convert to fraction form
    1,117.11/1,541.78 = 697.53/x
  3. Step 3: Cross multiply
    1,117.11x = 1,541.78 × 697.53
  4. Step 4: Simplify right side
    1,117.11x = 1,075,437.80
  5. Step 5: Solve for x
    x = 1,075,437.80/1,117.11
  6. Step 6: Final answer
    x = 962.70

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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.